Update cache library, use miniredis for testing, add additional benchmarks. (#14)

Update cache library,
Update logging library,
use miniredis for testing, add additional benchmarks.

struct_config.go

@@ -9,7 +9,8 @@ import (
 
 // config is a struct that holds the configuration of the application.
 type config struct {
-	Logger     *libpack_logging.LogConfig
+	Logger     *libpack_logging.Logger
+	LogLevel   string
 	Monitoring *libpack_monitoring.MetricsSetup
 	Api        struct{ BannedUsersFile string }
 	Client     struct {
@@ -32,7 +33,6 @@ type config struct {
 		Enable          bool
 	}
 	Cache struct {
-		Client             CacheClient
 		CacheRedisURL      string
 		CacheRedisPassword string
 		CacheTTL           int