herd

v0.4.2

herd v0.4.2 Herd.Router behaviour View Source

Manages load balancing between nodes in the cluster, for example through a hash ring

Link to this section Summary

Types

herd_node()
router()

Callbacks

add_nodes(lb, nodes)

Add nodes to the router

get_node(lb, key)

Gets a node from the router using the given key

get_nodes(lb, keys)

Gets nodes mapped by the given keys

new()

Initialize a new load router

nodes(lb)

Return all nodes in the router

remove_nodes(lb, nodes)

Remove nodes from the router

Link to this section Types

Link to this type herd_node() View Source 
herd_node() :: term()

Link to this section Callbacks

Link to this callback add_nodes(lb, nodes) View Source 
add_nodes(lb :: router(), nodes :: [herd_node()]) :: router()

Add nodes to the router

Link to this callback get_node(lb, key) View Source 
get_node(lb :: router(), key :: term()) :: {:ok, herd_node()} | {:error, any()}

Gets a node from the router using the given key

Link to this callback get_nodes(lb, keys) View Source 
get_nodes(lb :: router(), keys :: [term()]) ::
  {:ok, %{optional(term()) => herd_node()}} | {:error, any()}

Gets nodes mapped by the given keys

Link to this callback new() View Source 
new() :: router()

Initialize a new load router

Link to this callback nodes(lb) View Source 
nodes(lb :: router()) :: [herd_node()]

Return all nodes in the router

Link to this callback remove_nodes(lb, nodes) View Source 
remove_nodes(lb :: router(), nodes :: [herd_node()]) :: router()

Remove nodes from the router