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feat(redis): 优化配置语义并增强超时与连接池能力,同时保持向后兼容 (#869)
* fix: correct non-standard 'yml' tag to 'yaml' in RedisOpts * fix: apply MaxActive config to Redis PoolSize * fix: clarify config semantics, enhance timeout & pool options, and maintain backward compatibility * test: update unit test for redis * refactor: apply suggestions from code review * test: add comprehensive coverage for redis * refactor: resolve funlen linter errors in redis unit tests * refactor: remove empty else-if branch in NewRedis function
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58
cache/redis.go
vendored
58
cache/redis.go
vendored
@@ -17,14 +17,24 @@ type Redis struct {
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// RedisOpts redis 连接属性
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type RedisOpts struct {
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Host string `json:"host" yml:"host"`
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Username string `json:"username" yaml:"username"`
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Password string `json:"password" yml:"password"`
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Database int `json:"database" yml:"database"`
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MaxIdle int `json:"max_idle" yml:"max_idle"`
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MaxActive int `json:"max_active" yml:"max_active"`
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IdleTimeout int `json:"idle_timeout" yml:"idle_timeout"` // second
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UseTLS bool `json:"use_tls" yml:"use_tls"` // 是否使用TLS
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Host string `json:"host" yaml:"host"`
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Username string `json:"username" yaml:"username"`
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Password string `json:"password" yaml:"password"`
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Database int `json:"database" yaml:"database"`
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MinIdleConns int `json:"min_idle_conns" yaml:"min_idle_conns"` // 最小空闲连接数
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PoolSize int `json:"pool_size" yaml:"pool_size"` // 连接池大小,0 表示使用默认值(即 CPU 核心数 * 10)
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MaxRetries int `json:"max_retries" yaml:"max_retries"` // 最大重试次数,-1 表示不重试,0 表示使用默认值(即 3 次)
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DialTimeout int `json:"dial_timeout" yaml:"dial_timeout"` // 连接超时时间(秒),0 表示使用默认值(即 5 秒)
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ReadTimeout int `json:"read_timeout" yaml:"read_timeout"` // 读取超时时间(秒),-1 表示不超时,0 表示使用默认值(即 3 秒)
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WriteTimeout int `json:"write_timeout" yaml:"write_timeout"` // 写入超时时间(秒),-1 表示不超时,0 表示使用默认值(即 ReadTimeout)
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PoolTimeout int `json:"pool_timeout" yaml:"pool_timeout"` // 连接池获取连接超时时间(秒),0 表示使用默认值(即 ReadTimeout + 1 秒)
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IdleTimeout int `json:"idle_timeout" yaml:"idle_timeout"` // 空闲连接超时时间(秒),-1 表示禁用空闲连接超时检查,0 表示使用默认值(即 5 分钟)
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UseTLS bool `json:"use_tls" yaml:"use_tls"` // 是否使用 TLS
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// Deprecated: 应使用 MinIdleConns 代替
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MaxIdle int `json:"max_idle" yaml:"max_idle"`
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// Deprecated: 应使用 PoolSize 代替
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MaxActive int `json:"max_active" yaml:"max_active"`
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}
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// NewRedis 实例化
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@@ -34,10 +44,38 @@ func NewRedis(ctx context.Context, opts *RedisOpts) *Redis {
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DB: opts.Database,
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Username: opts.Username,
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Password: opts.Password,
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IdleTimeout: time.Second * time.Duration(opts.IdleTimeout),
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MinIdleConns: opts.MaxIdle,
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MinIdleConns: opts.MinIdleConns,
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PoolSize: opts.PoolSize,
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MaxRetries: opts.MaxRetries,
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}
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// 兼容旧的 MaxIdle 参数,仅在未显式设置 MinIdleConns 时生效
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if opts.MaxIdle > 0 && opts.MinIdleConns == 0 {
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uniOpt.MinIdleConns = opts.MaxIdle
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}
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// 兼容旧的 MaxActive 参数,仅在未显式设置 PoolSize 时生效
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if opts.MaxActive > 0 && opts.PoolSize == 0 {
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uniOpt.PoolSize = opts.MaxActive
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}
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applyTimeout := func(seconds int, target *time.Duration) {
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if seconds > 0 {
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*target = time.Duration(seconds) * time.Second
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} else if seconds == -1 {
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// 当 seconds 为 -1 时,表示禁用超时:按 go-redis 约定,将超时时间设置为负值(如 -1ns)代表「无超时」
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*target = -1
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}
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// 当 seconds 为 0 时,使用 go-redis 的默认超时配置:
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// 不修改 target,保持其零值(0),由 go-redis 解释为“使用默认值”
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}
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applyTimeout(opts.DialTimeout, &uniOpt.DialTimeout)
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applyTimeout(opts.ReadTimeout, &uniOpt.ReadTimeout)
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applyTimeout(opts.WriteTimeout, &uniOpt.WriteTimeout)
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applyTimeout(opts.PoolTimeout, &uniOpt.PoolTimeout)
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applyTimeout(opts.IdleTimeout, &uniOpt.IdleTimeout)
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if opts.UseTLS {
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h, _, err := net.SplitHostPort(opts.Host)
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if err != nil {
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