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refactor(core)!: reference parameter support and Upstream::call(self)

deriveDerive macros and #[cached] attributeDerive macros and #[cached] attribute

enhancementNew feature or requestNew feature or request

hitbox-fnFunction memoization crateFunction memoization crate

Status: Open (in progress).

hit-box/hitboxnumber 206

#206 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

feat(http): unify extractor and predicate APIs for 0.3

configuration-apiconfiguration api related issuesconfiguration api related issues

predicatesPredicates related issuesPredicates related issues

Status: Open (in progress).

hit-box/hitboxnumber 202

#202 In hit-box/hitbox;

· singulared opened on Feb 3, 2026

Remove bitcode::__private usage, switch to derive macros

cache-keyCache key generationCache key generation

coreCore hitbox functionalityCore hitbox functionality

Status: Open.

#218 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Redis error classification for retry logic

backendCache backend related issuesCache backend related issues

redisRedis related issuesRedis related issues

Status: Open.

#219 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Compressor: return Cow<[u8]> for zero-copy passthrough

backendCache backend related issuesCache backend related issues

performancePerformance optimization and benchmarkingPerformance optimization and benchmarking

Status: Open.

#220 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

HTTP cache headers (Cache-Status, Age)

http

research

Status: Open.

#221 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Multi-config support per Cache layer

configuration-apiconfiguration api related issuesconfiguration api related issues

coreCore hitbox functionalityCore hitbox functionality

Status: Open.

#222 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Publish hitbox-configuration to crates.io

configuration

distributiondistribution types and processesdistribution types and processes

Status: Open.

#223 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Cache invalidation research

http

research

Status: Open.

#224 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

Resilient backend research

backendCache backend related issuesCache backend related issues

research

Status: Open.

#225 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

gRPC/Protobuf/Twirp caching research

research

Status: Open.

#226 In hit-box/hitbox;

· singulared opened on Feb 6, 2026

CacheConfig::policy() should return Arc<PolicyConfig> for consistency

coreCore hitbox functionalityCore hitbox functionality

performancePerformance optimization and benchmarkingPerformance optimization and benchmarking

Status: Open.

Feature

#231 In hit-box/hitbox;

· singulared opened on Feb 8, 2026

Tarantool backend

backendCache backend related issuesCache backend related issues

tarantool

Status: Open.

#81 In hit-box/hitbox;

· singulared opened on Jul 9, 2023

Rethink OffloadKey variants and task trackability API

bugSomething isn't workingSomething isn't working

coreCore hitbox functionalityCore hitbox functionality

Status: Open.

Task

#235 In hit-box/hitbox;

· AndreyErmilov opened on Feb 8, 2026

Metrics label interning: avoid per-operation allocation

good first issueGood for newcomersGood for newcomers

metricsMetrics collectionMetrics collection

performancePerformance optimization and benchmarkingPerformance optimization and benchmarking

Status: Open.

#217 In hit-box/hitbox;

· singulared opened on Feb 6, 2026