Files
s3/weed/mq/kafka/protocol/response_cache.go
zooqueen dd74d3e6d6 Replace AGPL MinIO fork with Apache-2.0 SeaweedFS fork; rebrand CLI weed->s3
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.

- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
  "Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
  SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
  (replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
  keep their upstream import paths with zero churn. Internal identifiers and
  import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
  help/usage/flag strings, shell autocomplete program name, and the product name
  in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
  (e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
  `cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
  updated to ignore the `s3` build output.
2026-06-18 23:41:25 -07:00

81 lines
1.6 KiB
Go

package protocol
import (
"sync"
"time"
)
// ResponseCache caches API responses to reduce CPU usage for repeated requests
type ResponseCache struct {
mu sync.RWMutex
cache map[string]*cacheEntry
ttl time.Duration
}
type cacheEntry struct {
response []byte
timestamp time.Time
}
// NewResponseCache creates a new response cache with the specified TTL
func NewResponseCache(ttl time.Duration) *ResponseCache {
return &ResponseCache{
cache: make(map[string]*cacheEntry),
ttl: ttl,
}
}
// Get retrieves a cached response if it exists and hasn't expired
func (c *ResponseCache) Get(key string) ([]byte, bool) {
c.mu.RLock()
defer c.mu.RUnlock()
entry, exists := c.cache[key]
if !exists {
return nil, false
}
// Check if entry has expired
if time.Since(entry.timestamp) > c.ttl {
return nil, false
}
return entry.response, true
}
// Put stores a response in the cache
func (c *ResponseCache) Put(key string, response []byte) {
c.mu.Lock()
defer c.mu.Unlock()
c.cache[key] = &cacheEntry{
response: response,
timestamp: time.Now(),
}
}
// Cleanup removes expired entries from the cache
func (c *ResponseCache) Cleanup() {
c.mu.Lock()
defer c.mu.Unlock()
now := time.Now()
for key, entry := range c.cache {
if now.Sub(entry.timestamp) > c.ttl {
delete(c.cache, key)
}
}
}
// StartCleanupLoop starts a background goroutine to periodically clean up expired entries
func (c *ResponseCache) StartCleanupLoop(interval time.Duration) {
go func() {
ticker := time.NewTicker(interval)
defer ticker.Stop()
for range ticker.C {
c.Cleanup()
}
}()
}