Implement redis caching

cache_redis.go

+package main
+
+import (
+	"encoding/json"
+	"git.kuschku.de/justjanne/bahn-api"
+	"github.com/go-redis/cache"
+	"github.com/go-redis/redis"
+	"time"
+)
+
+type RedisCache struct {
+	backend        *cache.Codec
+	expirationTime time.Duration
+}
+
+func (m RedisCache) Set(key string, value interface{}) error {
+	return m.backend.Set(&cache.Item{
+		Key: key,
+		Object: value,
+		Expiration: m.expirationTime,
+	})
+}
+
+func (m RedisCache) Get(key string, value interface{}) error {
+	return m.backend.Get(key, &value)
+}
+
+func NewRedisCache(expirationTime time.Duration) bahn.CacheBackend {
+	return RedisCache{
+		backend: &cache.Codec{
+			Redis: redis.NewClient(&redis.Options{
+
+			}),
+			Marshal:   json.Marshal,
+			Unmarshal: json.Unmarshal,
+		},
+	}
+}

go.mod

@@ -4,5 +4,7 @@ go 1.12
 
 require (
 	git.kuschku.de/justjanne/bahn-api v0.0.0-20190504114009-71c830fe0812
+	github.com/go-redis/cache v6.3.5+incompatible
+	github.com/go-redis/redis v6.15.2+incompatible
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 )

go.sum

@@ -2,6 +2,10 @@ git.kuschku.de/justjanne/bahn-api v0.0.0-20190504114009-71c830fe0812 h1:dhL0LHGo
 git.kuschku.de/justjanne/bahn-api v0.0.0-20190504114009-71c830fe0812/go.mod h1:WQsAQzBR+0dlaVVuwwkx8j5uMoWDIdc8xtX4vlRrp5E=
 github.com/andybalholm/cascadia v1.0.0 h1:hOCXnnZ5A+3eVDX8pvgl4kofXv2ELss0bKcqRySc45o=
 github.com/andybalholm/cascadia v1.0.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
+github.com/go-redis/cache v6.3.5+incompatible h1:4OUyoXXYRRQ6tKA4ue3TlPUkBzk3occzjtXBZBxCzgs=
+github.com/go-redis/cache v6.3.5+incompatible/go.mod h1:XNnMdvlNjcZvHjsscEozHAeOeSE5riG9Fj54meG4WT4=
+github.com/go-redis/redis v6.15.2+incompatible h1:9SpNVG76gr6InJGxoZ6IuuxaCOQwDAhzyXg+Bs+0Sb4=
+github.com/go-redis/redis v6.15.2+incompatible/go.mod h1:NAIEuMOZ/fxfXJIrKDQDz8wamY7mA7PouImQ2Jvg6kA=
 github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01 h1:po1f06KS05FvIQQA2pMuOWZAUXiy1KYdIf0ElUU2Hhc=