TODO

waitpid

Posix标准

守护进程

 tree setuptools

http，python requests

epoll

加密 hash

python 错误处理

nginx

gevent

 single instance model

json python 解析

route　　request　　werkzeug jianshu threadlocal

SQL view group_by

bibao

@wraps

args kw

netstat端口，参数，local, remote timewait
pstree
gunicorn work

rs.status()

UTF8

mongodb system

index

odm orm

curl

neestat ps du free , etc...

git blame

Python 循环依赖

Redis连接池线程

use_reloader
OS>ENVIOR
socket releted
TCP/IP
mongo explain

strict_slashes
session
middleware
// BLUEPRINT
HTTP协议
MSS MTU
CI CD 工作流
virtual env python path
PATH
环境变量，永久保存

flask jsonify
unicode utf-8
logging

'signature': sig,
'sig_kv': sig_kv

classmethod 和 staticmethod

setuotolls 

multiprocessing

greenlet

(2006, 'MySQL server has gone away')

sns和sqs

过期时间

ssh的实现

supervisorctl

lsof netstat

多重继承

链接ring

线程切换步骤

微服务 SOA

CDN

socket acc fd

使用链接的意义，场景

应用场景

各种锁（互斥锁）

bitmap

encoding

explain

进程间通信

range ref

df

VFS, etc

df,du

process related

interrupt sleep

sigaction

non-local jump

cache buffer

哈希

LFU LRU

backlog文件

cache para

k-level page table

vm execve

AF_INET, SOCK_STREAM
TCP/IP -> network programming
short counts situations
restrictions on sockets
Concurrent Programming with I/O Multiplexing 
父进程能否等待子进程
线程join能否等待所有
gc
共享内存

Mark&Sweep Garbage Collectors 

pthread_exit

信号量同步的例子

volatile

进程池，线程池

I/O multiplexing is not the only way to write an event-driven program.（事件驱动的含义）

Functions that keep state across multiple invocations.  

deepcopy

deadlock

restful

select, poll, epoll原理 

NETWORK:

SMSS 

Note that in most cases SMSS is equal to the smaller of the receiver’s MSS and the path MTU (less header sizes). 

congression avoidance do when transmission