lua-cassandra

• Index

Contents

• Functions

Modules

• cassandra
• resty.cassandra.cluster
• resty.cassandra.policies.lb.dc_rr
• resty.cassandra.policies.lb.req_dc_rr
• resty.cassandra.policies.lb.req_rr
• resty.cassandra.policies.lb.rr
• resty.cassandra.policies.reconnection.const
• resty.cassandra.policies.reconnection.exp
• resty.cassandra.policies.retry.simple

Manual

• README

Examples

• authentication.lua
• batch.lua
• intro.lua
• pagination.lua
• ssl.lua

Module resty.cassandra.policies.lb.dc_rr

Datacenter-aware round robin load balancing policy.

This policy will work better than its plain Round Robin counterpart in multi-datacenters setups. It is implemented in such a fashion that it will always prioritize nodes from the local/closest datacenter (which needs to be manually specified).

Info:

• Author: thibaultcha

Functions

new (local_dc)

Create a DC-aware round robin policy.

Functions

new (local_dc)

Create a DC-aware round robin policy. Instanciates a DC-aware round robin policy for resty.cassandra.cluster.

Parameters:

• local_dc string Name of the local/closest datacenter.

Returns:

table policy: A DC-aware round robin policy.

Usage:

local Cluster = require "resty.cassandra.cluster"
local dc_rr = require "resty.cassandra.policies.lb.dc_rr"

local policy = dc_rr.new("my_local_cluster_name")
local cluster = assert(Cluster.new {
  lb_policy = policy
})