Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
- API
  
  Reference documentation for the pkg.go.dev API
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

hydro

package module

Go to main page

Versions in this module

v1

v1.0.0

Jul 30, 2026

Changes in this version

+ const RecommendedWantInterval

+ const SubscriptionDuration

+ var ErrChannelAlreadyRegistered = errors.New("channel already registered by different worker")

+ var ErrChannelNotRegistered = errors.New("channel is not registered")

+ var Log = log.New(os.Stdout, "hydro ", log.Flags())

+ type BatchOptions struct

+ BatchDuration time.Duration

+ MaxAmount int

+ type BatchOutput struct

+ Err error

+ Outputs map[I]O

+ type BatchRequest struct

+ Collector chan BatchOutput[I, O]

+ Inputs []I

+ type Batcher struct

+ BatchFunc func([]I) (map[I]O, error)

+ Collector chan BatchRequest[I, O]

+ Options BatchOptions

+ func (b *Batcher[I, O]) Do(inputs []I) (map[I]O, error)

+ func (b *Batcher[I, O]) Init()

+ type Change interface

+ Stack func(c Change[T]) Change[T]

+ type Config struct

+ PubSubBackend PS

+ type DatabaseListenerCreate struct

+ Get func(DB, []string) (map[string]C, error)

+ Identifier string

+ OnChange func(key string, change Change[C])

+ PoolConfig PoolConfig

+ type DatabaseListenerDictionary struct

+ Identifier string

+ Instance *Instance[DB, PS]

+ func NewListenerDictionary[DB any, PS IPubSubBackend[DB], C Change[C]](instance *Instance[DB, PS], create DatabaseListenerCreate[DB, C]) *DatabaseListenerDictionary[DB, PS, C]

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) Get(db DB, keys []string) (map[string]C, error)

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) GetIdentifier() string

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) Reset(ctx context.Context, db DB, keys []string) error

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) Subscribe(db DB, keys []string, identifier string, subscription func(change Change[C])) error

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) Unsubscribe(identifier string, keys []string)

+ func (ld *DatabaseListenerDictionary[DB, PS, C]) Update(ctx context.Context, db DB, key string, change Change[C]) error

+ type IPubSubBackend interface

+ CreateWorker func() ISubWorker

+ Publish func(ctx context.Context, database DB, channel string, message string) error

+ type ISubWorker interface

+ Close func()

+ OnError func(func(channel string, err error))

+ OnMessage func(func(channel string, message string))

+ Subscribe func(ctx context.Context, channels ...string) error

+ Unsubscribe func(ctx context.Context, channels ...string) error

+ type Identifiable interface

+ GetIdentifier func() string

+ type Instance struct

+ func New[DB any, PS IPubSubBackend[DB]](config *Config[DB, PS]) *Instance[DB, PS]

+ type ListenerSubscriptions struct

+ func NewSubs[DB any, PS IPubSubBackend[DB], C Change[C]](instance *Instance[DB, PS]) *ListenerSubscriptions[DB, PS, C]

+ func (ls *ListenerSubscriptions[DB, PS, C]) Add(identifier string, subscription func(c Change[C]))

+ func (ls *ListenerSubscriptions[T, PS, C]) Delete(identifier string)

+ func (ls *ListenerSubscriptions[T, PS, C]) DisableQueuing(base Change[C])

+ func (ls *ListenerSubscriptions[T, PS, C]) IsQueuing() bool

+ func (ls *ListenerSubscriptions[T, PS, C]) OnChange(change Change[C])

+ type LocalPubSub struct

+ func NewLocalPubSub() *LocalPubSub

+ func (lpb *LocalPubSub) CreateWorker() ISubWorker

+ func (w *LocalPubSub) Publish(ctx context.Context, database any, channel string, message string) error

+ type LocalSubWorker struct

+ func (w *LocalSubWorker) Close()

+ func (w *LocalSubWorker) OnError(handler func(channel string, err error))

+ func (w *LocalSubWorker) OnMessage(handler func(channel string, message string))

+ func (w *LocalSubWorker) Subscribe(ctx context.Context, channels ...string) error

+ func (w *LocalSubWorker) Unsubscribe(ctx context.Context, channels ...string) error

+ type PoolConfig struct

+ MaxAmountByWorker int

+ type SubPool struct

+ func NewPubSubPool[DB any, PS IPubSubBackend[DB]](backend PS, config PoolConfig) *SubPool[DB, PS]

+ func (p *SubPool[DB, PS]) OnError(handler func(channel string, err error))

+ func (p *SubPool[DB, PS]) OnMessage(handler func(channel string, message string))

+ func (p *SubPool[DB, PS]) Subscribe(ctx context.Context, channels ...string) error

+ func (p *SubPool[DB, PS]) Unsubscribe(ctx context.Context, channels ...string) error

+ func (p *SubPool[DB, T]) Close()

+ type Subscription = func(c Change[C])

v0

v0.1.0-alpha.9

Mar 7, 2026

v0.1.0-alpha.8

Feb 28, 2026

v0.1.0-alpha.7

Feb 27, 2026

v0.1.0-alpha.6

Feb 27, 2026

v0.1.0-alpha.5

Feb 26, 2026

v0.1.0-alpha.4

Feb 26, 2026

v0.1.0-alpha.3

Feb 26, 2026

v0.1.0-alpha.2

Feb 26, 2026

v0.1.0-alpha.1

Feb 26, 2026