Posts by Year

Software Engineering - What is “Just Right”?

3 minute read

Lessons Learned

Learning Redis Streams

2 minute read

XREAD [COUNT count] [BLOCK milliseconds] STREAMS key [key …] id [id …] Some details: If COUNT is unset, it reads EVERYTHING. The ID field is an EXCLUSIV...

How to achieve read-write separation using redis replication with Sentinels & the go-redis library?

2 minute read

Problem Want to read from replicas and only write to the master, to reduce master loads. Solution Create read-only clients using NewFailOverClient(opt) with ...

使用gomock和httptest测试api

less than 1 minute read

Mock

Isolation Level (MySQL & Postgres)

less than 1 minute read

Isolation level与事务中的问题

Git branch改名，push/pull冲突，Go使用remote package

less than 1 minute read

Git branch改名

How to run Go code

less than 1 minute read

GOROOT & GOPATH

shell中的“冒号”，export，source

less than 1 minute read

冒号 = 路径分隔符

浅谈c++优化

less than 1 minute read

本文大部分整理自Optimizing_cpp

lc经典题及思路

less than 1 minute read

国内厂感觉考经典题的比较多，特别是那种经典的hard，没做过绝对想不到怎么做。遵从“核心题刷到会为止”的思想，特开一帖记录一下我做了很多次都8会的题。

OOD

less than 1 minute read

OK家人们，明天就是微软面试，所以我今天开始看OOD。我做得对吗。

一道lc字符串题（通配符）

less than 1 minute read

在看微软面经，看到这么一题：

Os Concepts

less than 1 minute read

IO的执行流程

浅谈虚拟化

less than 1 minute read

https://inst.eecs.berkeley.edu/~cs162/su20/static/lectures/26.pdf

浅谈Cloud Computing & Edge Computing

less than 1 minute read

On-premise & Cloud

lc难点精选：备战麦克罗索夫特

3 minute read

二叉树与链表

QuantConnect入门

2 minute read

Final Year Project要用QuantConnect做backtest。所以记录一下学习过程。

CMake & googletest

less than 1 minute read

Install CMake

浅谈Soot

less than 1 minute read

这学期上了一门PG课COMP5111，它的PA要求用Soot来对Java字节码进行操作（主要插入一些自定义指令）。这样在没有源代码(which is mostly the case)的情况下也能做事情了。

在IntelliJ中使用Jacoco，jenv设置，shell中的双括号

less than 1 minute read

https://stackoverflow.com/questions/43500774/jacoco-with-intellij

TinyWebServer研究（2）

less than 1 minute read

昨天是做出来一个可以打印出client发过来的信息的一个服务器。今天做一下接到读请求->读相应文件->返回符合http格式的返回报文。

read和recv到底什么时候会block

less than 1 minute read

在写webserver的时候，我调用recv()函数的方式如下：

2PC and Eventual Consistency

less than 1 minute read

TinyWebServer研究（1）

less than 1 minute read

打算把TinyWebServer写一遍。

浅谈zookeeper

less than 1 minute read

什么是zookeeper，为什么要有zookeeper

Raft Lab 3

less than 1 minute read

Server

Raft Lab 2

less than 1 minute read

The Raft Interface

浅谈Raft

less than 1 minute read

raft是什么

MapReduce是怎么切的

less than 1 minute read

当时学mr的时候有一个地方被卡了挺久，就是怎么分的M个map task和R个reduce task，特别是map完到reduce怎么分的。

浅谈Redis

less than 1 minute read

拉了，不想浅谈了。Redis这玩意也没法浅谈吧。

浅谈Linux网络编程（以一个http server为例）

2 minute read

Socket小知识

浅谈epoll的LT和ET

2 minute read

怎么设置ET

Docker使用

less than 1 minute read

Mac查看占用端口

浅谈Docker & k8s

less than 1 minute read

Docker

大杂烩：Service层，开闭原则，分库分表

less than 1 minute read

为什么要有service层？

一道表达式模拟题

2 minute read

题目

浅谈MyBatis以及MyBatis-Plus

3 minute read

MyBatis

浅谈slf4j和logback

1 minute read

Facade Pattern

Dijkstra为什么不能有负权

less than 1 minute read

走在路上突然想到这个问题，但是一时没想出来。

浅谈Spring AOP

less than 1 minute read

什么是AOP，AOP有什么用

感想 12/19-12/26

less than 1 minute read

这周刷了70-80道atc（难度相当于lchard），然后两个周赛都翻车了。

转CS一周年这天，我第一次AK了lc周赛

less than 1 minute read

一年前的12月19日，有人写下了这么一条：

Second Week of LeetCode (10.14-10.20)

less than 1 minute read

Thanks to LGD，从17号开始就没有刷lc了，转而背单词+读了一些书。

First Week of LeetCode (10.1-10.4, 10.11-10.13)

less than 1 minute read

首周感觉还算可以，但是考虑到全职刷题的状态，进度我个人不太满意。反思一下，很多时候还是对着一个自己想的显然错误/不是最优的解法死磕导致效率不高。所以说接下来严格按照下图的方法来刷。

LeetCode - Prologue

less than 1 minute read

开个新坑，LeetCode。

Optimistic Concurrency Control

2 minute read

When will OCC be a win?

What I learned in Alibaba

2 minute read

I joined the DingTalk division of Alibaba Group as an intern at the beginning of August. I “formally” started learning computer science in December last year...