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262 lines
7.0 KiB
Markdown
262 lines
7.0 KiB
Markdown
---
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id: redis
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title: Redis
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---
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[](https://gofiber.io/discord)
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A Redis storage driver using [go-redis/redis](https://github.com/go-redis/redis).
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### Table of Contents
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- [Signatures](#signatures)
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- [Installation](#installation)
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- [Examples](#examples)
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- [Config](#config)
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- [Default Config](#default-config)
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### Signatures
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```go
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func New(config ...Config) Storage
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func NewFromConnection(conn redis.UniversalClient) *Storage
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func (s *Storage) Get(key string) ([]byte, error)
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func (s *Storage) GetWithContext(ctx context.Context, key string) ([]byte, error)
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func (s *Storage) Set(key string, val []byte, exp time.Duration) error
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func (s *Storage) SetWithContext(ctx context.Context, key string, val []byte, exp time.Duration) error
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func (s *Storage) Delete(key string) error
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func (s *Storage) DeleteWithContext(ctx context.Context, key string) error
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func (s *Storage) Reset() error
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func (s *Storage) ResetWithContext(ctx context.Context) error
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func (s *Storage) Close() error
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func (s *Storage) Conn() redis.UniversalClient
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func (s *Storage) Keys() ([][]byte, error)
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```
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### Installation
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Redis is tested on the 2 last [Go versions](https://golang.org/dl/) with support for modules. So make sure to initialize one first if you didn't do that yet:
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> **Note:** You can also use [DragonflyDB](https://dragonflydb.io/) as a Redis replacement.
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> Since DragonflyDB is fully compatible with the Redis API, you can use it exactly like Redis **without any code changes**.
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> [Example](#example-using-dragonflydb)
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```bash
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go mod init github.com/<user>/<repo>
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```
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And then install the redis implementation:
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```bash
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go get github.com/gofiber/storage/redis/v3
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```
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### Examples
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Import the storage package.
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```go
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import "github.com/gofiber/storage/redis/v3"
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```
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You can use the one of the following options to create a Redis Storage:
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```go
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// Initialize default config
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store := redis.New()
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// Initialize custom config
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store := redis.New(redis.Config{
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Host: "127.0.0.1",
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Port: 6379,
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Username: "",
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Password: "",
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Database: 0,
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Reset: false,
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TLSConfig: nil,
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PoolSize: 10 * runtime.GOMAXPROCS(0),
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})
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// Initialize Redis Failover Client
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store := redis.New(redis.Config{
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MasterName: "master-name",
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Addrs: []string{":6379"},
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})
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// Initialize Redis Cluster Client
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store := redis.New(redis.Config{
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Addrs: []string{":6379", ":6380"},
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})
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// Initialize AWS ElastiCache Redis Cluster with Configuration Endpoint
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store := redis.New(redis.Config{
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Addrs: []string{"cluster.xxxxx.cache.amazonaws.com:6379"},
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IsClusterMode: true,
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})
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// Create a client with support for TLS
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cer, err := tls.LoadX509KeyPair("./client.crt", "./client.key")
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if err != nil {
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log.Println(err)
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return
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}
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tlsCfg := &tls.Config{
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MinVersion: tls.VersionTLS12,
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InsecureSkipVerify: true,
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Certificates: []tls.Certificate{cer},
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}
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store = redis.New(redis.Config{
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URL: "redis://<user>:<pass>@127.0.0.1:6379/<db>",
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TLSConfig: tlsCfg,
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Reset: false,
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})
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// Create a client with a Redis URL with all information.
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store = redis.New(redis.Config{
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URL: "redis://<user>:<pass>@127.0.0.1:6379/<db>",
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Reset: false,
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})
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```
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### Config
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```go
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type Config struct {
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// Host name where the DB is hosted
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//
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// Optional. Default is "127.0.0.1"
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Host string
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// Port where the DB is listening on
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//
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// Optional. Default is 6379
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Port int
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// Server username
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//
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// Optional. Default is ""
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Username string
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// Server password
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//
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// Optional. Default is ""
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Password string
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// Database to be selected after connecting to the server.
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//
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// Optional. Default is 0
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Database int
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// URL standard format Redis URL. If this is set all other config options, Host, Port, Username, Password, Database have no effect.
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//
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// Example: redis://<user>:<pass>@localhost:6379/<db>
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// Optional. Default is ""
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URL string
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// Either a single address or a seed list of host:port addresses, this enables FailoverClient and ClusterClient
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//
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// Optional. Default is []string{}
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Addrs []string
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// MasterName is the sentinel master's name
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//
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// Optional. Default is ""
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MasterName string
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// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
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//
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// Optional. Default is ""
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ClientName string
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// SentinelUsername
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//
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// Optional. Default is ""
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SentinelUsername string
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// SentinelPassword
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//
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// Optional. Default is ""
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SentinelPassword string
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// Reset clears any existing keys in existing Collection
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//
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// Optional. Default is false
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Reset bool
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// TLS Config to use. When set TLS will be negotiated.
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//
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// Optional. Default is nil
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TLSConfig *tls.Config
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// Maximum number of socket connections.
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//
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// Optional. Default is 10 connections per every available CPU as reported by runtime.GOMAXPROCS.
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PoolSize int
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// IsClusterMode forces cluster mode even with single address.
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// Useful for AWS ElastiCache Configuration Endpoints.
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//
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// Optional. Default is false
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IsClusterMode bool
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}
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```
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### Default Config
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```go
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var ConfigDefault = Config{
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Host: "127.0.0.1",
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Port: 6379,
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Username: "",
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Password: "",
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URL: "",
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Database: 0,
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Reset: false,
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TLSConfig: nil,
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PoolSize: 10 * runtime.GOMAXPROCS(0),
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Addrs: []string{},
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MasterName: "",
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ClientName: "",
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SentinelUsername: "",
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SentinelPassword: "",
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IsClusterMode: false,
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}
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```
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### Using an Existing Redis Connection
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If you already have a Redis client configured in your application, you can create a Storage instance directly from that client. This is useful when you want to share an existing connection throughout your application instead of creating a new one.
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```go
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import (
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"github.com/gofiber/storage/redis"
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redigo "github.com/redis/go-redis/v9"
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"fmt"
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"context"
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)
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func main() {
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// Create or reuse a Redis universal client (e.g., redis.NewClient, redis.NewClusterClient, etc.)
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client := redigo.NewUniversalClient(&redigo.UniversalOptions{
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Addrs: []string{"127.0.0.1:6379"},
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})
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// Create a new Storage instance from the existing Redis client
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store := redis.NewFromConnection(client)
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// Set a value
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if err := store.Set("john", []byte("doe"), 0); err != nil {
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panic(err)
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}
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// Get the value
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val, err := store.Get("john")
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if err != nil {
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panic(err)
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}
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fmt.Println("Stored value:", string(val))
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// Clean up
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store.Close()
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}
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```
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### Example: Using DragonflyDB
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> **Note:** You can use [DragonflyDB](https://dragonflydb.io/) in the same way as Redis.
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> Simply start a DragonflyDB server and configure it just like Redis. Then, call `New()` and use it exactly as you would with Redis.
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