- tracing: validateEndpoint used fmt.Sscanf("%s:%d") which treats %s as
greedy, so every valid host:port endpoint failed and traced==nil disabled
tracing entirely. Validate with net.SplitHostPort (pure helper, port range
0-65535); test TestValidateEndpoint.
- proxy: createFasthttpClient used clientTimeout for every timeout slot,
ignoring the parsed CLIENT_READ_TIMEOUT/CLIENT_WRITE_TIMEOUT (silent
config loss, documented separately in README). Honour per-side read/write
timeouts, falling back to client timeout when unset.
- cache/memory: evictToFreeMemory capped candidates at maxCacheSize/5 and
stopped at the subset end, so a large write could leave the cache over
its memory limit. Collect all entries and sort.Slice (correct + O(n log n)
vs O(cap^2)), evict until the target is met or the cache is drained.
- cache/redis: the Redis cache client was never closed at shutdown (unlike
the metrics aggregator). Add RedisConfig.Close, CacheWrapper.Close, a
cache.Shutdown and register it with the ShutdownManager.
* chore(security,refactor): extract sanitization and improve code quality
- [x] Extract sanitization functions to dedicated sanitization.go module
- [x] Add comprehensive golangci-lint v2 configuration with security rules
- [x] Replace interface{} with any type throughout codebase
- [x] Add admin API authentication security warning
- [x] Extract WebSocket and stats streaming constants
- [x] Add best-effort error handling comments for resource cleanup
- [x] Expand sensitive field patterns for improved PII redaction
- [x] Simplify safety checks and remove redundant nil validations
- [x] Improve test coverage for password field redaction patterns
* refactor: replace interface{} with any type alias
- [x] Replace all `map[string]interface{}` with `map[string]any`
- [x] Replace all `interface{}` with `any` in function signatures and type definitions
- [x] Update sync.Pool New function returns from `interface{}` to `any`
- [x] Add package documentation comments to 8 package files
- [x] Update type assertions and casts to work with `any` type
lukaszraczylo
