Added dict with additional cards

internal/caching/cache_test.go

@@ -0,0 +1,49 @@
+package caching
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/alicebob/miniredis/v2"
+	"github.com/go-redis/redis"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetSet(t *testing.T) {
+	client, s := getTestClient()
+	defer s.Close()
+
+	keyName := "test_key"
+	value := "test_value"
+	client.Set(keyName, value)
+	val, err := client.Get(keyName)
+	assert.Nil(t, err)
+	assert.Equal(t, value, val)
+}
+
+func TestExpiration(t *testing.T) {
+	client, s := getTestClient()
+	defer s.Close()
+
+	client.Expiration = time.Millisecond
+	keyName := "test_key"
+	value := "test_value"
+	client.Set(keyName, value)
+	s.FastForward(time.Millisecond * 2)
+	val, err := client.Get(keyName)
+	assert.Zero(t, val)
+	assert.NotNil(t, err)
+}
+
+func getTestClient() (*CacheClient, *miniredis.Miniredis) {
+	s, _ := miniredis.Run()
+	fmt.Println(s.Addr())
+	c := redis.NewClient(&redis.Options{
+		Addr: s.Addr(),
+	})
+	return &CacheClient{
+		Storage:    c,
+		Expiration: 0,
+	}, s
+}

internal/caching/client.go

@@ -0,0 +1,39 @@
+package caching
+
+import (
+	"github.com/go-redis/redis"
+	"time"
+)
+
+type CacheClient struct {
+	Storage    *redis.Client
+	Expiration time.Duration
+}
+
+var client *CacheClient
+
+func GetClient() *CacheClient {
+	if client != nil {
+		return client
+	}
+	client = new(CacheClient)
+	client.Init()
+	return client
+}
+
+func (client *CacheClient) Init() {
+	client.Storage = redis.NewClient(&redis.Options{
+		Addr:     HostName,
+		Password: Password,
+		DB:       0,
+	})
+	client.Expiration = CacheExpiration
+}
+
+func (client *CacheClient) Set(key string, value string) {
+	client.Storage.Set(key, value, client.Expiration)
+}
+
+func (client *CacheClient) Get(key string) (string, error) {
+	return client.Storage.Get(key).Result()
+}

internal/caching/secrets.go

@@ -0,0 +1,9 @@
+package caching
+
+import (
+	"time"
+)
+
+const HostName = "redis:6379"
+const Password = ""
+const CacheExpiration = time.Hour * 24