envoyproxy/envoy

CacheFilter: Make SimpleHttpCache a production-ready in-memory cache

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#9,860 opened on Jan 28, 2020

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area/cachehelp wanted

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Description

SimpleHttpCache is a minimal proof-of-concept HttpCache implementation that pays no attention to memory usage, and doesn't ever delete entries. It should be built into a production-ready in-process in-memory cache.

Contributor guide

Research direction
Study the existing SimpleHttpCache implementation, understand its memory management and lack of eviction, then design and implement an in memory cache with proper eviction (e.g., LRU), thread safety, and configurable limits.
Tech stack
None
Domain
backendapi
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C++caching
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60