redis-py | Redis Python Client | Command Line Interface library
kandi X-RAY | redis-py Summary
kandi X-RAY | redis-py Summary
Redis Python Client
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redis-py Examples and Code Snippets
Lines of Code : 9License : Permissive (MIT)
Copygit clone https://github.com/redis/redis-py.git
cd example/opentelemetry
python3 -m venv .venv
source .venv/bin/active
pip install -r requirements.txt
docker-compose up -d
docker-compose logs uptrace
python3 main.py
trace: http://localhost:14318/ >>> import redis
>>> r = redis.Redis(host='localhost', port=6379, db=0)
>>> r.set('foo', 'bar')
True
>>> r.get('foo')
b'bar'
>>> pipe = r.pipeline()
>>> pipe.set('foo', 5)
>>> pipe.set('bar', 18.5)
>>> pipe.set('blee', "hello world!")
>>> pipe.execute()
[True, True, True]
#!/usr/bin/env python3
import time
import uptrace
from opentelemetry import trace
from opentelemetry.instrumentation.redis import RedisInstrumentor
import redis
tracer = trace.get_tracer("app_or_package_name", "1.0.0")
def main():
uptrace.c Community Discussions
Trending Discussions on redis-py
QUESTION
As of redis-py 4.0, json is supported. I am using redis-py version 4.0.2 on Windows 11. I have a redis server running in docker utilizing redislabs/rejson:latest.
I am attempting to load a json object via the following -
...ANSWER
Answered 2021-Dec-06 at 22:31You have a b prefix in your json, which stands for bytes.
Just remove 'b' from b"some": and it would work as expected:
QUESTION
I have a simple Redis command that does the following:
...ANSWER
Answered 2021-Nov-23 at 17:09Well, I was being obtuse. The documentation I linked states that the count argument is available from version 6.2. However, since I'm running Windows I don't get the newest version, ergo the failure.
QUESTION
I'm using redis-py to process bulk insertions into a Redis store.
I wrote the following very simple method:
...ANSWER
Answered 2021-Sep-10 at 15:24So when using the HSET command the return value is the number of fields that were added
QUESTION
I have a business case where I want to access a clustered Redis cache from one account (let's say account A) to an account B.
I have used the solution mentioned in the below link and for the most part, it works Base Solution
The base solution works fine if I am trying to access the clustered Redis via redis-py however if I try to use it with redis-py-cluster it fails.
I am testing all this in a staging environment where the Redis cluster has only one node but in the production environment, it has two nodes, so the redis-py approach will not work for me.
Below is my sample code
...ANSWER
Answered 2021-Jul-08 at 19:59Based on your comment:
this was not possible because of VPCs in Account-A and Account-B had the same CIDR range. Peered VPCs can’t have the same CIDR range.
I think what you are looking for is impossible. Routing within a VPC always happens first - it happens before any route tables are considered at all. Said another way, if the destination of the packet lies within the sending VPC it will never leave that VPC because AWS will try routing it within its own VPC, even if the IP isn't in use at that time in the VPC.
So, if you are trying to communicate with a another VPC which has the same IP range as yours, even if you specifically put a route to egress traffic to a different IP (but in the same range), the rule will be silently ignored and AWS will try to deliver the packet in the originating VPC, which seems like it is not what you are trying to accomplish.
QUESTION
Can we somehow create something similar using asyncio to how Redis named lock behaves?
In Redis we can use lock with key, in that way if you change the key it will change the lock.
That way we will be able to use different locks for different keys which will speed up things.
ANSWER
Answered 2021-Apr-12 at 19:57With a functional approach and a dict you could do something like this:
QUESTION
I want to mark a standalone Redis server (not a Redis-Cluster, not a Redis-Sentinel) as read-only. I have been googling for this for quite sometime but I don't seem to find a definite answer (Almost all answers point to Clustering or Sentinel). I was looking out for some config modification (CONFIG SET something).
NOTE: config set replica-read-only yes does not make the current redis-server read-only, but only its replicas.
My use-case basically is I am doing a migration wherein at some point I want to make the redis-server read-only. My application code can handle failures whenever a write call happens so that's not an issue.
Also, if this is not directly possible from redis server, is there something that I can do in the client code that'll have the same effect (I am using redis-py as the client library)? (Although this is less than ideal)
Things that I've tried- Played around with
config set replica-read-only yesand other configs. They don't seem to be applying the current redis-server. - Tried marking a redis-server as a replica of itself (This was illogical, but just wanted to see if this worked), but turns out it deleted all keys in my local redis, so not something I can do.
ANSWER
Answered 2020-Sep-21 at 00:21There're several solution you can try:
You can use the
rename-commandconfig to disable write commands. If you only want to disable small number of commands, that's a good solution. However, since there're too many write commands, you might need to have too many configuration, and easy to miss some of them.If you're using Redis 6.0, you can use Redis ACL to disable write commands for specific users.
You can setup a read-only Redis replica for your master, and ask clients to read from the replica.
QUESTION
Hi I am trying to create a cluster with service and task. I have a python app in Ecr that connects to redis container. The issue is I am unable to create ec2 instance with autoscaling. Myservice in Cluster and Autoscaling doesn't builds.
Cluster:
...ANSWER
Answered 2020-Aug-03 at 03:48Since you haven't provided any error messages, the initial look at Autoscaling template shows several issues.
QUESTION
I am creating ECS cluster, service and task using cloudformation but it gives an error: Embedded stack arn:aws:cloudformation:us-east-2:0212657325299:stack/Root-Cluster-153O1DKDIKGLV/f1123c5c-d1f9-11ea-1216-2a3e4111fce2 was not successfully created: The following resource(s) failed to create: [Myservice, LoadBalancerListener]. I have created a root stack which runs the vpc stack and Cluster stack. This error occurs when running the Cluster stack. I think the error is in the Load balancer and role in Myservice but I am unable to figure the solution. Any help would be appreciated.
ANSWER
Answered 2020-Jul-30 at 04:06The AWS::ECS::Service LoadBalancer is an object. There were also other issues:
- Missing
DependsOn - Missing port on container
I used the template in us-east-1 using default VPC. The template will still not work as there are no container instances. But at least your original issue should be addressed.
QUESTION
I am reading Josiah Carlson's Redis in Action.
And in the second chapter there is code like this:
...ANSWER
Answered 2020-Jul-18 at 19:36I added explanation for each command, the answer of the question is at the end.
It adds a new item(or update the score) to the specified sorted set, score as timestamp.
itemwill be going to the at the end of the sorted set since timestamp is current. Therankof this element will be the highest since it goes to the end of the list with highest score(timestamp).
QUESTION
I am experimenting with building a flask app and deploying on Cloud Run. This app will use Redis as a cache. I have successfully created a service using a redis container (it appears to be running). What I cannot figure out how to do is to connect to it. When I try to ping the redis database using redis-py and the service url,
...ANSWER
Answered 2020-Jul-08 at 07:23Several points in your question
- Firstly, when you reach a Cloud Run service, you do it ONLY on the port 443 (HTTPS protocol). Of course, internally your service (your container) is exposed on a custom port (8080 by default) but in front of your internal service, a layer is applied (Google Front End, or GFE) that proxies the connection (and host the SSL certificate, check the authentication, create the entry in the DNS,...) and expose your service externally.
-> The port 8080 is not open on your service, your error is normal, reach it on the port 443 (or put nothing if your URL prefix is https)
- Secondly, I'm quite intriguing about your REDIS service on Cloud Run. AFAIK, REDIS is a in memory database, and Cloud Run is a stateless and ephemeral container, which can be provision and destroy at any time. The service can scale up and down,... So, how have you configured your REDIS server (and your Cloud Run service) to achieve correctly what you want?
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Install redis-py
You can use redis-py like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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