SkyTools 介绍
这是一个在 Skype 中使用工具包用于复制和故障转移。它还包括一个通用的排队机制PgQ
和实用程序库的Python脚本，以及为建立和管理基于WAL的备用服务器脚本。
This is a package of tools in use in Skype for replication and failover. It
also includes a generic queuing mechanism PgQ and utility library for Python
scripts, as well as a script for setting up and managing WAL based standby
servers.