feat: use postgres

pkg/redisconn/client.go

@@ -0,0 +1,43 @@
+package redisconn
+
+import (
+	"github.com/redis/go-redis/v9"
+)
+
+// NewMasterClient builds the master Redis client from cfg using the
+// conservative options shared by the existing service publishers
+// (`Protocol: 2`, `DisableIdentity: true`, dial/read/write timeouts bound to
+// cfg.OperationTimeout).
+//
+// NewMasterClient does not validate cfg; callers are expected to call
+// Config.Validate (or LoadFromEnv which already does) before invoking this.
+func NewMasterClient(cfg Config) *redis.Client {
+	return redis.NewClient(buildOptions(cfg.MasterAddr, cfg))
+}
+
+// NewReplicaClients builds one Redis client per replica address. It returns
+// nil when no replicas are configured; callers treat that as "no replicas
+// wired".
+func NewReplicaClients(cfg Config) []*redis.Client {
+	if len(cfg.ReplicaAddrs) == 0 {
+		return nil
+	}
+	clients := make([]*redis.Client, 0, len(cfg.ReplicaAddrs))
+	for _, addr := range cfg.ReplicaAddrs {
+		clients = append(clients, redis.NewClient(buildOptions(addr, cfg)))
+	}
+	return clients
+}
+
+func buildOptions(addr string, cfg Config) *redis.Options {
+	return &redis.Options{
+		Addr:            addr,
+		Password:        cfg.Password,
+		DB:              cfg.DB,
+		Protocol:        2,
+		DisableIdentity: true,
+		DialTimeout:     cfg.OperationTimeout,
+		ReadTimeout:     cfg.OperationTimeout,
+		WriteTimeout:    cfg.OperationTimeout,
+	}
+}