Add redis support for distributed caching

vendor/github.com/alicebob/miniredis/v2/cmd_object.go

@@ -0,0 +1,58 @@
+package miniredis
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/alicebob/miniredis/v2/server"
+)
+
+// commandsObject handles all object operations.
+func commandsObject(m *Miniredis) {
+	m.srv.Register("OBJECT", m.cmdObject)
+}
+
+// OBJECT
+func (m *Miniredis) cmdObject(c *server.Peer, cmd string, args []string) {
+	if len(args) == 0 {
+		setDirty(c)
+		c.WriteError(errWrongNumber(cmd))
+		return
+	}
+	if !m.handleAuth(c) {
+		return
+	}
+	if m.checkPubsub(c, cmd) {
+		return
+	}
+
+	switch sub := strings.ToLower(args[0]); sub {
+	case "idletime":
+		m.cmdObjectIdletime(c, args[1:])
+	default:
+		setDirty(c)
+		c.WriteError(fmt.Sprintf(msgFObjectUsage, sub))
+	}
+}
+
+// OBJECT IDLETIME
+func (m *Miniredis) cmdObjectIdletime(c *server.Peer, args []string) {
+	if len(args) != 1 {
+		setDirty(c)
+		c.WriteError(errWrongNumber("object|idletime"))
+		return
+	}
+	key := args[0]
+
+	withTx(m, c, func(c *server.Peer, ctx *connCtx) {
+		db := m.db(ctx.selectedDB)
+
+		t, ok := db.lru[key]
+		if !ok {
+			c.WriteNull()
+			return
+		}
+
+		c.WriteInt(int(db.master.effectiveNow().Sub(t).Seconds()))
+	})
+}