我正在寻找一种自动执行负载平衡的方法，这个模块吸引了我。
正如手册所说，
pool can be used to run a set of Erlang nodes as a pool of computational processors. It is organized as a master and a set of slave nodes and includes the following features:
- The slave nodes send regular reports to the master about their current load.
- Queries can be sent to the master to determine which node will have the least load.
The BIF statistics(run_queue) is used for estimating future loads. It returns the length of the queue of ready to run processes in the Erlang runtime system.
从节点定期发送报告的频率和负载是多少？
这样的负载均衡方式是否正确？
最佳答案
报告发送every 2 seconds并使用从 statistics(run_queue) 收集的信息来确定负载最少的节点。 run_queue 返回当前节点调度程序的队列大小。
当您调用 pool:get_node/0 时，您将获得等待在其调度程序上执行的任务数量最少的节点。请记住，节点是按排序顺序保存的，因此调用 pool:get_node/0 不会直接查询节点，而是依赖可能长达 2 秒的信息。
如果您需要一个负载均衡的节点池，pool 非常有用。
这里有一些来自 pool.erl 源的更多信息:
%% Supplies a computational pool of processors.
%% The chief user interface function here is get_node()
%% Which returns the name of the nodes in the pool
%% with the least load !!!!
%% This function is callable from any node including the master
%% That is part of the pool
%% nodes are scheduled on a per usgae basis and per load basis,
%% Whenever we use a node, we put at the end of the queue, and whenever
%% a node report a change in load, we insert it accordingly
关于erlang - 我可以使用模块池来决定负载平衡吗？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15456897/