Add a Redis core

[shaypal5]

No description provided.

[Copilot]

Pull Request Overview

This PR adds Redis-based caching support to Cachier, introducing a new Redis core implementation, accompanying tests, documentation updates, and CI integration.

• Implements _RedisCore in src/cachier/cores/redis.py and wires it into the cachier decorator.
• Adds comprehensive tests for the Redis core under tests/test_redis_core.py and CI config for Redis.
• Updates type definitions, examples, README, and CI workflows to support the new Redis backend.

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/cachier/cores/redis.py	New Redis core implementation for caching logic
src/cachier/core.py	Registers redis_client param and redis backend
src/cachier/_types.py	Extends Backend and defines RedisClient type
tests/test_redis_core.py	Tests covering Redis core features
tests/redis_requirements.txt	Test dependencies for Redis (redis, pandas, birch)
examples/redis_example.py	Example usage of the Redis backend
README.rst	Documentation section for Redis core
.github/workflows/ci-test.yml	CI pipeline steps and matrix for Redis tests

Comments suppressed due to low confidence (3)

src/cachier/cores/redis.py:208

• There are no tests covering clear_being_calculated; consider adding a test in tests/test_redis_core.py to ensure entries marked as being calculated are correctly reset.

    def clear_being_calculated(self) -> None:

src/cachier/core.py:109

• The decorator signature does not include a key_prefix parameter, so passing key_prefix to the Redis backend (as shown in the README) will cause an unexpected argument error. Consider adding key_prefix to the decorator parameters and passing it to _RedisCore.

def cachier(

examples/redis_example.py:57

• [nitpick] Calling setup_redis_client() directly may return None and cause a MissingRedisClient error. It’s better to pass the callable or guard the decorator application to ensure a valid client is provided.

    @cachier(backend="redis", redis_client=setup_redis_client())