It’s a common case to download a file with full size, but what if we want to download only the first few bytes of the file? For example if we want to check the file header or to check the file existence.

Should we download file to buffer and copy it to local disk by counting bytes? No, Go offers a super easy function to handle this, io.Copy().

One advantage of systemd.timer over cron job is, you can easily get detailed execution log from journalctl -u. Here is a demo of creating a simple task that runs periodically.

由于某些原因的原因， Azure 在中国的业务由世纪互联经营，所有的 Azure Service 均需本地化后才能使用。 Azure-cli 是一个非常强大的 Azure 资源管理工具，但由于在国内使用需要访问国内资源，所以在使用时需要选择中国的 Environment。

It was exciting to visit Yammer office during my short stay at San Francisco. Although you can find giant Microsoft Logo around the corner, it still feels like a cool startup.

作为 Azure China 推出的融合 CDN 服务的基础之一，DNS 的智能调度是所有 CDN 资源解析的第一步。通过根据物理地址信息、运营商信息以及实时监控出的 performance 数据，Smart Routing 能及时作出响应并分配给用户最佳的 CDN 资源节点。Smart Routing 的实现原理大致如下图所示：

More details can be found from its official documentation: http://kubernetes.io/docs/getting-started-guides/

I have been through a tough period with MySQL stored procedure and Entity Framework. To tell the truth, it is really painful to work on Visual Studio with Entity Framework, especially for teamwork. Anyway, back to stored procedure, unlike other advanced programming languages, there are some functions that do not perform like what we expect.

Since I was still an intern at STOIC, I was told to use git pull --rebase as much as possible to avoid unexpected merge conflict. Yes, it was right at that time, because we were all working in the same branch master. However, if you are a big fan of Git Flow, you should probably pay attention, overused rebase may cause panic in a team work. Let’s see why.