kfox

# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0

ragingwind

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster

vincentbernat

From 83f0062d385fd4f111b31c1f26b571cabd7e0e4c Mon Sep 17 00:00:00 2001
From: Vincent Bernat <[email protected]>
Date: Thu, 5 Sep 2013 16:52:45 +0200
Subject: [PATCH] EDNS0 client subnet support.

---
 bin/named/client.c               | 227 +++++++++++++++++++++++++++++++--------
 bin/named/include/named/client.h |   4 +
 bin/named/include/named/server.h |  81 +++++++-------
 bin/named/sortlist.c             |   4 +-

laixintao

from requests.adapters import HTTPAdapter, Retry
from requests import Session

retries = Retry(
  total=5, backoff_factor=1, status_forcelist=[502, 503, 504]
)
session = Session()  # reuse tcp connection
session.mount("http://", HTTPAdapter(max_retries=retries))
session.mount("https://", HTTPAdapter(max_retries=retries))