Create a cache package

Signed-off-by: Nikolai Rodionov <iam@allanger.xyz>

internal/cache/cache.go

@@ -1 +1,25 @@
 package cache
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	CacheFolderToken = "token"
+)
+
+func buildKey(folder, key string) string {
+	return fmt.Sprintf("%s:%s", folder, key)
+}
+
+func GetFromCache(ctx context.Context, redis *redis.Client, folder, key string) string {
+	return redis.Get(ctx, buildKey(folder, key)).Val()
+}
+
+func SaveToCache(ctx context.Context, redis *redis.Client, folder, key, value string, ttl time.Duration) error {
+	return redis.Set(ctx, buildKey(folder, key), value, ttl).Err()
+}