I have to compile multiple versions of an app written in C++ and I think to use ccache for speeding up the process.
I accidentally deleted some huge number of rows from a table... How can I roll it back? I executed the query using PuTTY.
摘要: 作为开发，nosql我们用的越来越多，代表性的是mongodb，速度快性能好，还能完美的创建二维索引．这里我们梳理一下ubuntu上安装mongodb创建账号和库及添加坐标索引
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