Context

Recently, I’m looking for efficient string manipulation in Golang, during the process of that, I used Golang benchmark to test the execution time and checked the Golang middle code to know the underlying mechanism between different solutions.

This article helps the software engineers who have Web development experience in other languages to migrate to Python Web development quickly, it contains several parts like basics, web development part, etc.

In the previous article, I did two experiments on what isolation it brings with UID and Mount, this article explains how to limit the container’s resource by using Cgroups, for instance, CPU, memory resources.

In the previous article, I did two experiments on what isolation it brings with PID and UTS, this article explains UID and Mount namespace.

This article starts some Golang experiments on Linux namespace and provides context for Container technology. Linux namespace is an important foundation of container technology, it provides lightweight isolation between processes with Linux kernel support, therefore, different services can share the same machine with better resource utilization, great security.

This article explains how to setup OAuth2 client for Django in 5 minutes, it’s used for Web service which requires user to login by OAuth2, especially for those who are familiar with OAuth2.0 but unfamiliar with Django.

If you have no idea about OAuth2.0 workflow, please visit OAuth2 net

gRPC is a well-known RPC protocol and a lot of companies adopted it as an internal communication protocol because of its robustness and stability. To use it more efficiently, I’ve done some experiments about how to maximize the gRPC client concurrency.

背景

最近在做APP投放渠道分析，就是Android应用投放到应用市场，所谓渠道就是huawei,xiaomi,yingyongbao之类，运营人员根据数据分析渠道的下载安装情况、各个渠道的投放效果。

配置

利用Cloudera的CDH套件搭建好Hadoop 2.6，可CDH中的Hive版本不高，于是独立安装Hive 2.3，由于Hive的执行引擎默认是Spark，根据Hive官网上的Hive on Spark教程开始配置。

频次限制（rate limiting）是Web系统比较常见的功能，防止用户频繁访问接口，导致系统负载增加而影响服务的质量。这里来介绍在分布式系统中实现一个共享的频次限制服务，且保证接口低时延高访问量。