feat: connect to redis sentinel for redis cache (backport #25398)

[mergify]

Please provide enough information so that others can review your pull request:

Use redis sentinel for redis cache connection. It is setup for production only using extra keys from common_site_config.json

Explain the details for making this change. What existing problem does the pull request solve?

At the moment we can connect to single redis master for cache. With this we can connect to sentinel cluster.

https://redis.io/docs/management/sentinel

To try it with frappe_docker/devcontainer make following changes to .devcontainer/docker-compose.yml

version: "3.7"
services:
  mariadb:
    image: docker.io/mariadb:10.6
    command:
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_unicode_ci
      - --skip-character-set-client-handshake
      - --skip-innodb-read-only-compressed # Temporary fix for MariaDB 10.6
    environment:
      - MYSQL_ROOT_PASSWORD=123
    volumes:
      - mariadb-data:/var/lib/mysql

  redis-cache:
    image: redis:alpine

  redis-queue:
    image: redis:alpine


## Change begins here ##
  redis-cache-sentinel:
    image: docker.io/bitnami/redis-sentinel:7.2
    environment:
      - REDIS_SENTINEL_PASSWORD=sentinelpassword
      - REDIS_MASTER_HOST=redis-cache-master
      - REDIS_MASTER_PASSWORD=masterpassword

  redis-cache-master:
    image: docker.io/bitnami/redis:7.2
    environment:
      - REDIS_PASSWORD=masterpassword
## Change ends here ##

  frappe:
    image: docker.io/frappe/bench:latest
    command: sleep infinity
    environment:
      - SHELL=/bin/bash
    volumes:
      - ..:/workspace:cached
      - ${HOME}/.ssh:/home/frappe/.ssh
    working_dir: /workspace/development
    ports:
      - 8000-8005:8000-8005
      - 9000-9005:9000-9005

volumes:
  mariadb-data:

add redis_cache_* keys to common_site_config.json

{
 "background_workers": 1,
 "db_host": "mariadb",
 "db_type": "mariadb",
 "developer_mode": 1,
 "file_watcher_port": 6788,
 "frappe_user": "frappe",
 "gunicorn_workers": 25,
 "live_reload": true,
 "rebase_on_pull": false,
 "redis_socketio": "redis://redis-queue:6379",
 "redis_cache": "redis://redis-cache:6379",
 "redis_cache_sentinel_enabled": 1,
 "redis_cache_sentinels": ["redis-cache-sentinel:26379"],
 "redis_cache_sentinel_password": "sentinelpassword",
 "redis_cache_master_service": "mymaster",
 "redis_cache_master_password": "masterpassword",
 "redis_queue": "redis://redis-queue:6379",
 "restart_supervisor_on_update": false,
 "restart_systemd_on_update": false,
 "serve_default_site": true,
 "shallow_clone": true,
 "socketio_port": 9000,
 "use_redis_auth": false,
 "webserver_port": 8000
}

Note: Nothing has changed to the redis_cache key. It will be used during development setup by bench watch command.

Screenshots/GIFs

To do:

• Docs

---

This is an automatic backport of pull request #25398 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 77618cd has failed:

On branch mergify/bp/version-14-hotfix/pr-25398
Your branch is up to date with 'origin/version-14-hotfix'.

You are currently cherry-picking commit 77618cde1f.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   frappe/__init__.py
	both modified:   frappe/utils/redis_wrapper.py

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[frappe-pr-bot]

🎉 This PR is included in version 14.68.0 🎉

The release is available on GitHub release

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