Buffer FS IO

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/containers/lru.go b/lib/containers/lru.go
index 8b8eb0e..a235a12 100644
--- a/lib/containers/lru.go
+++ b/lib/containers/lru.go
@@ -10,11 +10,22 @@ import (
 	lru "github.com/hashicorp/golang-lru"
 )
 
+// LRUCache is a least-recently-used(ish) cache.  A zero LRUCache is
+// usable and has a cache size of 128 items; use NewLRUCache to set a
+// different size.
 type LRUCache[K comparable, V any] struct {
 	initOnce sync.Once
 	inner    *lru.ARCCache
 }
 
+func NewLRUCache[K comparable, V any](size int) *LRUCache[K, V] {
+	c := new(LRUCache[K, V])
+	c.initOnce.Do(func() {
+		c.inner, _ = lru.NewARC(size)
+	})
+	return c
+}
+
 func (c *LRUCache[K, V]) init() {
 	c.initOnce.Do(func() {
 		c.inner, _ = lru.NewARC(128)