go-hlld

Provides the hlld package that implements a client library for the HyperLogLog daemon (HLLD). HyperLogLogs provide an extremely efficient method of cardinality estimation. The client library supports pipelining for extremely high throughput.

Documentation

The full documentation is available on Godoc.

Example

Below is a simple example of usage

// Create a client
client, err := hlld.Dial("hlld-server:1234")
if err != nil {
    panic("could not dial")
}

// Create a new set, custom precision
createCommand, err := hlld.NewCreateCommand("foo")
if err != nil {
    panic("failed to make command")
}

// Start the command
future, err := client.Execute(createCommand)
if err != nil {
    panic("failed to make command")
}

// Wait for the command to finish
if err := future.Error(); err != nil {
    panic("command failed")
}

// Check the result
ok, err := createCommand.Result()
if !ok || err != nil {
    panic("failed to make set")
}