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redis | The data model | Database library

 by   redis C Version: 7.0-rc3 License: BSD-3-Clause

 by   redis C Version: 7.0-rc3 License: BSD-3-Clause

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kandi X-RAY | redis Summary

redis is a C library typically used in Database applications. redis has no bugs, it has a Permissive License and it has medium support. However redis has 11 vulnerabilities. You can download it from GitHub.
Redis is often referred to as a data structures server. What this means is that Redis provides access to mutable data structures via a set of commands, which are sent using a server-client model with TCP sockets and a simple protocol. So different processes can query and modify the same data structures in a shared way.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • redis has a medium active ecosystem.
  • It has 54360 star(s) with 21075 fork(s). There are 2627 watchers for this library.
  • There were 1 major release(s) in the last 6 months.
  • There are 1612 open issues and 3731 have been closed. On average issues are closed in 306 days. There are 447 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of redis is 7.0-rc3
redis Support
Best in #Database
Average in #Database
redis Support
Best in #Database
Average in #Database

quality kandi Quality

  • redis has 0 bugs and 0 code smells.
redis Quality
Best in #Database
Average in #Database
redis Quality
Best in #Database
Average in #Database

securitySecurity

  • redis has 11 vulnerability issues reported (0 critical, 10 high, 1 medium, 0 low).
  • redis code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
redis Security
Best in #Database
Average in #Database
redis Security
Best in #Database
Average in #Database

license License

  • redis is licensed under the BSD-3-Clause License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
redis License
Best in #Database
Average in #Database
redis License
Best in #Database
Average in #Database

buildReuse

  • redis releases are available to install and integrate.
  • Installation instructions, examples and code snippets are available.
  • It has 8216 lines of code, 61 functions and 22 files.
  • It has high code complexity. Code complexity directly impacts maintainability of the code.
redis Reuse
Best in #Database
Average in #Database
redis Reuse
Best in #Database
Average in #Database
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redis Key Features

Redis cares to store them on disk, even if they are always served and modified into the server memory. This means that Redis is fast, but that it is also non-volatile.

The implementation of data structures emphasizes memory efficiency, so data structures inside Redis will likely use less memory compared to the same data structure modelled using a high-level programming language.

Redis offers a number of features that are natural to find in a database, like replication, tunable levels of durability, clustering, and high availability.

Introduction to Redis data types. https://redis.io/topics/data-types-intro

Try Redis directly inside your browser. https://try.redis.io

The full list of Redis commands. https://redis.io/commands

There is much more inside the official Redis documentation. https://redis.io/documentation

Building Redis

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% make

Allocator

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% make MALLOC=libc

Monotonic clock

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% make CFLAGS="-DUSE_PROCESSOR_CLOCK"

Verbose build

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% make V=1

Running Redis

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% cd src
% ./redis-server

Installing Redis

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% make install

Code contributions

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struct client {
    int fd;
    sds querybuf;
    int argc;
    robj **argv;
    redisDb *db;
    int flags;
    list *reply;
    // ... many other fields ...
    char buf[PROTO_REPLY_CHUNK_BYTES];
}

db.c

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void foobarCommand(client *c) {
    printf("%s",c->argv[1]->ptr); /* Do something with the argument. */
    addReply(c,shared.ok); /* Reply something to the client. */
}

How to invalidate a view cache using django-cacheops

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url(r'^order/(?P<usr>\D+)$', views.order, name='ord')
order.invalidate("http://127.0.0.1:8000/order/demo", "demo")
order.invalidate("http://127.0.0.1:8000/order/demo", usr="demo")
-----------------------
url(r'^order/(?P<usr>\D+)$', views.order, name='ord')
order.invalidate("http://127.0.0.1:8000/order/demo", "demo")
order.invalidate("http://127.0.0.1:8000/order/demo", usr="demo")
-----------------------
url(r'^order/(?P<usr>\D+)$', views.order, name='ord')
order.invalidate("http://127.0.0.1:8000/order/demo", "demo")
order.invalidate("http://127.0.0.1:8000/order/demo", usr="demo")

Redis NodeJs server error,client is closed

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import { createClient } from 'redis';

const client = createClient();

await client.connect();
const client = createClient({
    legacyMode: true
});
-----------------------
import { createClient } from 'redis';

const client = createClient();

await client.connect();
const client = createClient({
    legacyMode: true
});

Celery unable to use redis

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pip install Redis

Unable to build and deploy Rails 6.0.4.1 app on heroku - Throws gyp verb cli error

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[4/4] Building fresh packages...
       error /tmp/build_1ea87a91/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
       Exit code: 1 
yarn upgrade @rails/webpacker --latest
-----------------------
[4/4] Building fresh packages...
       error /tmp/build_1ea87a91/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
       Exit code: 1 
yarn upgrade @rails/webpacker --latest
-----------------------
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
   {
      "engines": {
        "node": "12.16.2"
      }
    }
-----------------------
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
   {
      "engines": {
        "node": "12.16.2"
      }
    }
-----------------------
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
   {
      "engines": {
        "node": "12.16.2"
      }
    }
-----------------------
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
   {
      "engines": {
        "node": "12.16.2"
      }
    }

Docker image does not run with specified Python version

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FROM aaftio/face_recognition as intermediate
RUN pip install face_recognition


FROM python:3.7.12-slim-buster

#Copy the python installed libraries from intermediate container
#COPY --from=intermediate face_recognition

RUN pip install redis
RUN pip3 install glob2
COPY ./worker.py /worker.py
COPY ./rediswq.py /rediswq.py

CMD  python3 worker.py

Bitnami Redis on Kubernetes Authentication Failure with Existing Secret

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$ helm install my-release \
  --set auth.password="admin1234" \
    bitnami/redis
$ kubectl get secrets my-release-redis -o yaml
apiVersion: v1
data:
  redis-password: YWRtaW4xMjM0Cg==
kind: Secret
...
export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)
kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity
-----------------------
$ helm install my-release \
  --set auth.password="admin1234" \
    bitnami/redis
$ kubectl get secrets my-release-redis -o yaml
apiVersion: v1
data:
  redis-password: YWRtaW4xMjM0Cg==
kind: Secret
...
export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)
kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity
-----------------------
$ helm install my-release \
  --set auth.password="admin1234" \
    bitnami/redis
$ kubectl get secrets my-release-redis -o yaml
apiVersion: v1
data:
  redis-password: YWRtaW4xMjM0Cg==
kind: Secret
...
export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)
kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity
-----------------------
$ helm install my-release \
  --set auth.password="admin1234" \
    bitnami/redis
$ kubectl get secrets my-release-redis -o yaml
apiVersion: v1
data:
  redis-password: YWRtaW4xMjM0Cg==
kind: Secret
...
export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)
kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity
-----------------------
$ helm install my-release \
  --set auth.password="admin1234" \
    bitnami/redis
$ kubectl get secrets my-release-redis -o yaml
apiVersion: v1
data:
  redis-password: YWRtaW4xMjM0Cg==
kind: Secret
...
export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)
kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity
-----------------------
printf admin1234 | base64

module 'aioredis' has no attribute 'create_redis'

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import asyncio
import async_timeout
import aioredis

STOPWORD = "STOP"


async def pubsub():
    redis = aioredis.Redis.from_url(
        "redis://localhost", max_connections=10, decode_responses=True
    )
    psub = redis.pubsub()

    async def reader(channel: aioredis.client.PubSub):
        while True:
            try:
                async with async_timeout.timeout(1):
                    message = await channel.get_message(ignore_subscribe_messages=True)
                    if message is not None:
                        print(f"(Reader) Message Received: {message}")
                        if message["data"] == STOPWORD:
                            print("(Reader) STOP")
                            break
                    await asyncio.sleep(0.01)
            except asyncio.TimeoutError:
                pass

    async with psub as p:
        await p.subscribe("channel:1")
        await reader(p)  # wait for reader to complete
        await p.unsubscribe("channel:1")

    # closing all open connections
    await psub.close()


async def main():
    tsk = asyncio.create_task(pubsub())

    async def publish():
        pub = aioredis.Redis.from_url("redis://localhost", decode_responses=True)
        while not tsk.done():
            # wait for clients to subscribe
            while True:
                subs = dict(await pub.pubsub_numsub("channel:1"))
                if subs["channel:1"] == 1:
                    break
                await asyncio.sleep(0)
            # publish some messages
            for msg in ["one", "two", "three"]:
                print(f"(Publisher) Publishing Message: {msg}")
                await pub.publish("channel:1", msg)
            # send stop word
            await pub.publish("channel:1", STOPWORD)
        await pub.close()

    await publish()


if __name__ == "__main__":
    import os

    if "redis_version:2.6" not in os.environ.get("REDIS_VERSION", ""):
        asyncio.run(main())

Bundler::GemNotFound: Could not find mimemagic-0.3.5 in any of the sources on Rails project with Docker

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bundle update --conservative mimemagic 
-----------------------
gem 'mimemagic', github: 'mimemagicrb/mimemagic', ref: '01f92d86d15d85cfd0f20dabd025dcbd36a8a60f' 
-----------------------
bundle update mimemagic

Airflow: how to get pip packages installed via their docker-compose.yml?

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FROM apache/airflow:2.0.1
USER root
RUN apt-get update \
  && apt-get install -y --no-install-recommends \
         build-essential my-awesome-apt-dependency-to-add \
  && apt-get autoremove -yqq --purge \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
USER airflow
RUN pip install --no-cache-dir --user my-awesome-pip-dependency-to-add
...
version: "3"
x-airflow-common: &airflow-common
  build: . # this is optional
  image: ${AIRFLOW_IMAGE_NAME:-the_name_of_your_extended_image
  ...
...
-----------------------
FROM apache/airflow:2.0.1
USER root
RUN apt-get update \
  && apt-get install -y --no-install-recommends \
         build-essential my-awesome-apt-dependency-to-add \
  && apt-get autoremove -yqq --purge \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
USER airflow
RUN pip install --no-cache-dir --user my-awesome-pip-dependency-to-add
...
version: "3"
x-airflow-common: &airflow-common
  build: . # this is optional
  image: ${AIRFLOW_IMAGE_NAME:-the_name_of_your_extended_image
  ...
...

How to loop on sorted (with custom sort) keys of a hash in Raku?

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enum Month (jan => 1, |<feb mar apr may jun jul aug sep oct nov dec>);

lines()
andthen .grep: /redis/&/Partial/
andthen .map: *.words
andthen .map: {Month::{.[0].lc} => .[1].Int}\ 
#or andthen .map: {Date.new: year => Date.today.year, month =>  Month::{.[0].lc},  day => .[1], }\
andthen  bag $_
andthen .sort
andthen .map: *.put;
-----------------------
my $data = q:to/END/; 
may 01 xxx3.1 Partial redis
may 01 xxx3.2 Partial redis
may 01 xxx3.3 Partial redis
apr 22 xxx2.2 Partial redis
apr 22 xxx2.1 Partial redis
mar 01 xxx1 redis Partial
some multi-line
string
END


sub sort-by( $value )
{
  state %m = <jan feb  mar apr may jun jul aug sep oct nov dec> Z=> 1..12;
  %m{ .[0].lc }, .[1] with $value.key.words;
}

say .key, ' ', .value.elems 
  for $data
    .lines
    .grep( /redis/ & /Partial/ )
    .classify( *.words[0..1].Str )
    .sort( &sort-by );
-----------------------
#test data...
my %totals = %( 
    "jan 2" => 3,
    "jan 4" => 1,
    "feb 7" => 1,
);

my %m = %("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

my &sorter = { 
    my ($a1, $a2) = split(' ', $^a); 
    my ($b1, $b2) = split(' ', $^b);
    %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 
}

for %totals.keys.sort(&sorter) ->$e {
    say "$e => {%totals{$e}}" 
}

#output
jan 2 => 3
jan 4 => 1
feb 7 => 1
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals;

for lines() {
    if (/redis/ and /Partial/) {
        my ($f1, $f2) = split(' ', $_);
        my $w = $f1 ~ ' ' ~ $f2;
        %totals{$w}++;
    }
}

my %m = ("jan" => 1, "feb" => 2, "mar" => 3, "apr" => 4, "may" => 5, "jun" => 6,
         "jul" => 7, "aug" => 8, "sep" => 9, "oct" => 10, "nov" => 11, "dec" => 12);

for sort { my ($a1, $a2) = split(' ', $^a) ; my ($b1, $b2) = split(' ', $^b) ;
            %m{lc $a1} <=> %m{lc $b1} or $a2 <=> $b2 }, keys %totals
    -> $e {
    print "$e", " ", %totals{$e}, "\n";
}
feb 1 redis Partial
jan 2 Partial redis
jan 2 redis Partial
Unsupported use of <>.  In Raku please use: lines() to read input ...
------> while (<⏏>) {
Variable '$f1' is not declared
------>         my(⏏$f1, $f2) ...
Unsupported use of .  to concatenate strings.  In Raku please use: ~.
------>         my $w = $f1 .⏏ ' ' . $f2;
Variable '$totals' is not declared.  Did you mean '%totals'?
------>         ⏏$totals{$w}++;
Unsupported use of 'foreach'.  In Raku please use: 'for'.
------> foreach⏏ my 
This appears to be Perl code
------> for ⏏my $e 
Variable '$a' is not declared
------> for sort { my ($a1, $a2) = split(' ', ⏏$a)
Missing comma after block argument to sort
------> { ... }⏏ keys
Calling split(Str) will never work with signature of the proto ($, $, |)
------>         my ($f1, $f2) = ⏏split(' '
-----------------------
my %totals{Pair}; # Keys of the `Pair`s in `%totals` are themselves `Pair`s

my %months = <jan feb mar apr may jun jul aug sep oct nov dec> .pairs; # 0 => jan

for lines.grep(/redis/ & /Partial/)».words {
  ++%totals{ %months.antipairs.hash{ lc .[0] }.Int => .[1].Int }
}

for %totals .sort {
  printf "%3s %2d : %-d\n", %months{.key.key}, .key.value, .value
}
role Totals {

  my %months = <jan feb mar apr may jun jul aug sep oct nov dec> .antipairs «+» 1; # jan => 1
  method month-name (Int $num --> Str)  { %months.antipairs.hash{$num} }
  method month-num  (Str $name --> Int) { %months{lc $name} }

  has %.data{Date} handles <sort>;

}

my $totals = Totals.new; 

for lines.grep(/redis/ & /Partial/)».words {
  ++$totals.data{ Date.new: :year(2000), :month(Totals.month-num: .[0]), :day(.[1]) }
}

for $totals .sort {
  printf "%3s %2d : %-d\n", Totals.month-name(.key.month), .key.day, .value
}
-----------------------
my %totals{Pair}; # Keys of the `Pair`s in `%totals` are themselves `Pair`s

my %months = <jan feb mar apr may jun jul aug sep oct nov dec> .pairs; # 0 => jan

for lines.grep(/redis/ & /Partial/)».words {
  ++%totals{ %months.antipairs.hash{ lc .[0] }.Int => .[1].Int }
}

for %totals .sort {
  printf "%3s %2d : %-d\n", %months{.key.key}, .key.value, .value
}
role Totals {

  my %months = <jan feb mar apr may jun jul aug sep oct nov dec> .antipairs «+» 1; # jan => 1
  method month-name (Int $num --> Str)  { %months.antipairs.hash{$num} }
  method month-num  (Str $name --> Int) { %months{lc $name} }

  has %.data{Date} handles <sort>;

}

my $totals = Totals.new; 

for lines.grep(/redis/ & /Partial/)».words {
  ++$totals.data{ Date.new: :year(2000), :month(Totals.month-num: .[0]), :day(.[1]) }
}

for $totals .sort {
  printf "%3s %2d : %-d\n", Totals.month-name(.key.month), .key.day, .value
}

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QUESTION

How to invalidate a view cache using django-cacheops

Asked 2022-Mar-19 at 15:05

I have a view and I cached it in views.py using django-cacheops (https://github.com/Suor/django-cacheops):

@cached_view(timeout=60*15)
@csrf_exempt
def order(request, usr):
    ...

The regex for order view in urls.py:

url(r'^order/(?P<usr>\D+)$', views.order, name='ord')
# Example Url: http://127.0.0.1:8000/order/demo (demo is the user name)

And I want to invalidate the cached view order inside the below view:

@login_required 
def available(request, pk, avail):
    pk = int(pk)
    avail = strtobool(avail)
    if avail:
        Product.objects.filter(id = pk).update(available = True)
    else:
        Product.objects.filter(id = pk).update(available = False)
    return HttpResponseRedirect(reverse_lazy('yc')) 

According to the docs, we can achieve this by doing:

@login_required 
def available(request, pk, avail):
    pk = int(pk)
    avail = strtobool(avail)
    if avail:
        Product.objects.filter(id = pk).update(available = True)
        order.invalidate("http://127.0.0.1:8000/order/demo", "demo")
        #it's a dummy url I've handled it dynamically in my code
    else:
        Product.objects.filter(id = pk).update(available = False)
        order.invalidate("http://127.0.0.1:8000/order/demo", "demo")
        #it's a dummy url I've handled it dynamically in my code
    return HttpResponseRedirect(reverse_lazy('yc')) 

But it's not working. Here are my logs using redis-cli monitor:

1647434341.849096 [1 [::1]:59650] "GET" "c:af687d461ec8bb3c48f6392010e54778"
1647434341.866966 [1 [::1]:59650] "SETEX" "c:af687d461ec8bb3c48f6392010e54778" "900" "\x80\x04\x95\xfa\b\x00\x00\x00\x00\x00\x00\x8c\x14django.http.response\x94\x8c\x0cHttpResponse\x94\x93\x94)\x81\x94}\x94(\x8c\b_headers\x94}\x94\x8c\x0ccontent-type\x94\x8c\x0cContent-Type\x94\x8c\x18text/html; charset=utf-8\x94\x86\x94s\x8c\x11_closable_objects\x94]\x94\x8c\x0e_handler_class\x94N\x8c\acookies\x94\x8c\x0chttp.cookies\x94\x8c\x0cSimpleCookie\x94\x93\x94)\x81\x94\x8c\x06closed\x94\x89\x8c\x0e_reason_phrase\x94N\x8c\b_charset\x94N\x8c\n_container\x94]\x94B\xed\a\x00\x00<!DOCTYPE html>\n\n<html>\n  <head>\n    <meta charset=\"utf-8\">\n    <title>Buy Products</title>\n    <link href=\"https://fonts.googleapis.com/css?family=Peralta\" rel=\"stylesheet\">\n    <link rel=\"stylesheet\" href=\"/static/css/bootstrap.min.css\">\n    <link rel=\"stylesheet\" href=\"/static/css/app.css\">\n  </head>\n  <body>\n      <div class=\"wrapper\">\n        <div class=\"container\">\n          <ol class=\"breadcrumb my-4\">\n            <li class=\"breadcrumb-item active\" style=\"color: #000;\">Buy Products</li>\n          </ol>\n          <form method=\"post\">\n            <!-- <input type=\"hidden\" name=\"csrfmiddlewaretoken\" value=\"SnsBnyPIwIDejqctR7TMNkITcSafgwiydwsyIiAKQkiSvr3nFA0cm1Tf3Mk6JTPj\"> -->\n            <p><label for=\"id_name\">Name:</label> <select name=\"name\" id=\"id_name\">\n  <option value=\"Redmi note 5\">Product Name: Redmi note 5 \n MRP: 100000 \n  Discounted Price: 45678 \n Description: It&#39;s good phone too</option>\n\n  <option value=\"xiomi 2\">Product Name: xiomi 2 \n MRP: 10000 \n  Discounted Price: 200 \n Description: xyz</option>\n\n  <option value=\"mouse\">Product Name: mouse \n MRP: 1400 \n  Discounted Price: 200 \n Description: xyzat</option>\n\n</select></p>\n<p><label for=\"id_user_name\">User name:</label> <textarea name=\"user_name\" cols=\"40\" rows=\"1\" maxlength=\"30\" required id=\"id_user_name\">\n</textarea></p>\n<p><label for=\"id_adress\">Adress:</label> <textarea name=\"adress\" cols=\"40\" rows=\"2\" maxlength=\"4000\" required id=\"id_adress\">\n</textarea></p>\n<p><label for=\"id_mobile\">Mobile:</label> <textarea name=\"mobile\" cols=\"40\" rows=\"1\" maxlength=\"10\" required id=\"id_mobile\">\n</textarea></p>\n<p><label for=\"id_qty\">Qty:</label> <input type=\"number\" name=\"qty\" required id=\"id_qty\"></p>\n            <button type=\"submit\" class=\"btn btn-success\">Buy</button>\n          </form>\n        </div>\n        <div class=\"push\"></div>\n      </div>\n    <script src=\"/static/js/jquery-3.2.1.min.js\"></script>\n    <script src=\"/static/js/popper.min.js\"></script>\n    <script src=\"/static/js/bootstrap.min.js\"></script>\n  </body>\n</html>\n\x94aub."
1647434354.133804 [1 [::1]:59650] "DEL" "c:94c7a9e7f6c7a45ee645caa02f53d000"

It looks like it's deleting some other cache.

I've also raised the issue in the repo of django-cache, you can check it for more information: https://github.com/Suor/django-cacheops/issues/425

ANSWER

Answered 2022-Mar-19 at 14:37

Since you used a named group usr in your regex, Django passes it as a keyword argument:

url(r'^order/(?P<usr>\D+)$', views.order, name='ord')

But you are trying to invalidate the cache with a positional argument:

order.invalidate("http://127.0.0.1:8000/order/demo", "demo")

Instead, invalidate it with the corresponding keyword argument:

order.invalidate("http://127.0.0.1:8000/order/demo", usr="demo")

Source https://stackoverflow.com/questions/71510217

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install redis

Redis will build with a user-friendly colorized output by default. If you want to see a more verbose output, use the following:.

Support

Note: By contributing code to the Redis project in any form, including sending a pull request via Github, a code fragment or patch via private email or public discussion groups, you agree to release your code under the terms of the BSD license that you can find in the [COPYING][1] file included in the Redis source distribution. Please see the [CONTRIBUTING][2] file in this source distribution for more information. For security bugs and vulnerabilities, please see [SECURITY.md][3]. [1]: https://github.com/redis/redis/blob/unstable/COPYING [2]: https://github.com/redis/redis/blob/unstable/CONTRIBUTING [3]: https://github.com/redis/redis/blob/unstable/SECURITY.md. If you are reading this README you are likely in front of a Github page or you just untarred the Redis distribution tar ball. In both the cases you are basically one step away from the source code, so here we explain the Redis source code layout, what is in each file as a general idea, the most important functions and structures inside the Redis server and so forth. We keep all the discussion at a high level without digging into the details since this document would be huge otherwise and our code base changes continuously, but a general idea should be a good starting point to understand more. Moreover most of the code is heavily commented and easy to follow. Source code layout ---. The Redis root directory just contains this README, the Makefile which calls the real Makefile inside the src directory and an example configuration for Redis and Sentinel. You can find a few shell scripts that are used in order to execute the Redis, Redis Cluster and Redis Sentinel unit tests, which are implemented inside the tests directory.

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