Release v0.1.0

vendor/github.com/lightninglabs/neutrino/cache/cache.go

@@ -0,0 +1,29 @@
+package cache
+
+import "fmt"
+
+var (
+	// ErrElementNotFound is returned when element isn't found in the cache.
+	ErrElementNotFound = fmt.Errorf("unable to find element")
+)
+
+// Cache represents a generic cache.
+type Cache interface {
+	// Put stores the given (key,value) pair, replacing existing value if
+	// key already exists. The return value indicates whether items had to
+	// be evicted to make room for the new element.
+	Put(key interface{}, value Value) (bool, error)
+
+	// Get returns the value for a given key.
+	Get(key interface{}) (Value, error)
+
+	// Len returns number of elements in the cache.
+	Len() int
+}
+
+// Value represents a value stored in the Cache.
+type Value interface {
+	// Size determines how big this entry would be in the cache. For
+	// example, for a filter, it could be the size of the filter in bytes.
+	Size() (uint64, error)
+}