Wednesday, March 7, 2012

"Mysql server has gone away" or "Lost connection to mysql server" when using Amazon RDS for for backup or whatev's

›
Hey, OMFG what a PITA. You run long mysql jobs, especially on an amazon RDS instance, especially e.g. backup, and it randomly fails, esp as ...
Monday, January 23, 2012

Tedious issues escaping/quoting strings for MySQL? Use hex! It's awesome!

›
Hiya, Ok sure yes you 'escape' all your strings for SQL (i.e. replace `'` with \' and so on for other nonprintable). Someti...
Wednesday, January 18, 2012

See wikipedia during january 18th blackout

›
Yes, yes wikipedia, we know you're all radical and cool. Anyway, just append ?banner=none to the end of your URL, for example; Look it w...
Friday, January 6, 2012

Obscure packetization bug in Verizon cellular HTTP proxy 'Harmony'! Does your app fail on VZW cell but work on wifi?

›
Wow this is a fucking bug and a half; (On iPhone, but applies to everything) Verizon currently appears to proxy any HTTP request over any po...
4 comments:
Tuesday, November 9, 2010

Rewriting (proxying) a TCP stream in one line

›
Damn unix is great... Step 1: In a shell, set up netcat to listen on TCP 5500: nc -l -p 5500 Step 2: In another shell/on an intermediate m...
Monday, October 18, 2010

Setting Tomcat JVM heap size as a percentage of total ram

›
Put at start of "bin/startup.sh" export CATALINA_OPTS="-Xmx`cat /proc/meminfo | grep MemTotal | awk '{ print $2*0.75 } ...
Tuesday, October 12, 2010

SSL performance of Tomcat and Apache Commons HTTP

›
Using latest Tomcat 6 on Java 1.6 on Centos. 1. Tomcat JSSE (standard) SSL option is much slower than the Apache Portable Runtime (APR) liba...