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redis | The data model | Database library

 by   redis C Version: 6.2.10 License: BSD-3-Clause

 by   redis C Version: 6.2.10 License: BSD-3-Clause

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 1 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 58278 star(s) with 22150 fork(s). There are 2595 watchers for this library.
  • There were 8 major release(s) in the last 6 months.
  • There are 1793 open issues and 4032 have been closed. On average issues are closed in 251 days. There are 491 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of redis is 6.2.10
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 1 vulnerability issues reported (0 critical, 0 high, 0 medium, 1 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

redis Examples and Code Snippets

See all related Code Snippets

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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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  • https://github.com/redis/redis.git

  • gh repo clone redis/redis

  • git@github.com:redis/redis.git

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