fix: fixed redis connection

cmd/main.go

@@ -25,7 +25,7 @@ func main() {
 	// Connect to database
 	db, err := database.Connect(db_config.GetDSN())
 	if err != nil {
-		log.Error("Failed to connect to database: ", err)
+		log.Error("Error", "error", err)
 	}
 	defer db.Close()
 

internal/cache/redis.go

@@ -3,27 +3,69 @@ package cache
 import (
 	"context"
 	"fmt"
+	"sync/atomic"
 	"time"
 
+	"github.com/charmbracelet/log"
 	"github.com/redis/go-redis/v9"
 )
 
 type Cache struct {
-	Client *redis.Client
+	Client  *redis.Client
+	Enabled atomic.Bool
 }
 
 // CreateCache creates a new Redis Cache
 func CreateCache(host string, port int, db int) *Cache {
 	address := fmt.Sprintf("%s:%d", host, port)
 	rdb := redis.NewClient(&redis.Options{
-		Addr:     address,
+		Addr:       address,
-		Password: "",
+		Password:   "",
-		DB:       db,
+		DB:         db,
+		MaxRetries: 1,
 	})
 
-	return &Cache{
+	c := &Cache{
 		Client: rdb,
 	}
+
+	// Initial check to set the state
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
+	defer cancel()
+
+	if err := rdb.Ping(ctx).Err(); err != nil {
+		log.Warn("Redis is offline. Starting in disabled mode.", "error", err)
+		c.Enabled.Store(false)
+	} else {
+		c.Enabled.Store(true)
+	}
+
+	// Start background health checker
+	go c.startHealthCheck()
+
+	return c
+}
+
+// startHealthCheck periodically checks the status of redis and changes status
+func (c *Cache) startHealthCheck() {
+	ticker := time.NewTicker(1 * time.Minute)
+	for range ticker.C {
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		err := c.Client.Ping(ctx).Err()
+		cancel()
+
+		if err != nil {
+			if c.Enabled.Load() {
+				log.Error("Redis connection lost. Disabling cache.")
+				c.Enabled.Store(false)
+			}
+		} else {
+			if !c.Enabled.Load() {
+				log.Info("Redis connection restored. Enabling cache.")
+				c.Enabled.Store(true)
+			}
+		}
+	}
 }
 
 // Set sets a key value in the cache with an expiry
@@ -33,7 +75,17 @@ func (c *Cache) Set(ctx context.Context, key string, value any, expiration time.
 
 // Get returns a key value from the cache if there is any
 func (c *Cache) Get(ctx context.Context, key string) (string, error) {
-	return c.Client.Get(ctx, key).Result()
+	val, err := c.Client.Get(ctx, key).Result()
+	if err != nil {
+		// Handle key not found
+		if err == redis.Nil {
+			// Return empty key and return descriptive error
+			return "", fmt.Errorf("key: %s not found. Error: %w", key, err)
+		}
+		// Handle any other errors
+		return "", fmt.Errorf("redis GET %s failed: %w", key, err)
+	}
+	return val, nil
 }
 
 // Clear clears specific keys from the cache