67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// go-redis 外部 Redis 服务器实现
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// 用于 Docker Compose / 生产环境部署 // Logan.Li
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package redis
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import (
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"context"
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"fmt"
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"time"
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goredis "github.com/redis/go-redis/v9"
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)
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// goRedisCache 基于 go-redis 的缓存实现 // Logan.Li
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type goRedisCache struct {
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client *goredis.Client
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}
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func newGoRedis(cfg Config) (Cache, error) {
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client := goredis.NewClient(&goredis.Options{
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Addr: fmt.Sprintf("%s:%d", cfg.Host, cfg.Port),
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Password: cfg.Password,
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DB: cfg.DB,
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})
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// 连接测试
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := client.Ping(ctx).Err(); err != nil {
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return nil, fmt.Errorf("redis: 连接失败 %s:%d: %w", cfg.Host, cfg.Port, err)
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}
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return &goRedisCache{client: client}, nil
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}
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func (r *goRedisCache) Get(ctx context.Context, key string) (string, error) {
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val, err := r.client.Get(ctx, key).Result()
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if err == goredis.Nil {
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return "", nil
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}
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return val, err
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}
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func (r *goRedisCache) Set(ctx context.Context, key string, value string, expiration time.Duration) error {
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return r.client.Set(ctx, key, value, expiration).Err()
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}
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func (r *goRedisCache) Del(ctx context.Context, keys ...string) error {
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return r.client.Del(ctx, keys...).Err()
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}
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func (r *goRedisCache) Exists(ctx context.Context, keys ...string) (int64, error) {
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return r.client.Exists(ctx, keys...).Result()
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}
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func (r *goRedisCache) Expire(ctx context.Context, key string, expiration time.Duration) error {
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return r.client.Expire(ctx, key, expiration).Err()
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}
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func (r *goRedisCache) Ping(ctx context.Context) error {
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return r.client.Ping(ctx).Err()
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}
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func (r *goRedisCache) Close() error {
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return r.client.Close()
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}
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