About ME

about me

I’m a full-time systems-engineer, part-time iOS developer, working and living in Běijīng

I use git, vim, textmate.

I prefer Gentoo and Fedora to Ubuntu



ruby -e "require 'base64'; puts Base64.decode64('LS0tCkxpdSBMYW50YW86CiAgRW1haWw6IGxpdWxhbnRhb0BnbWFpbC5jb20KICBUd2l0dGVyOiBodHRwczovL3R3aXR0ZXIuY29tL2xpdWxhbnRhbwogIFdlaWJvOiBodHRwOi8vd2VpYm8uY29tLzE2NTM2NDQyMjAvcHJvZmlsZQogIFFROiAxMDMwNzQKICBTaXRlczoKICAtIGh0dHA6Ly9ibG9nLmxpdWxhbnRhby5jb20KICAtIGh0dHA6Ly9taWIuY2MK')"


  • System adminstration
  • Linux kernel tuning and troubleshooting
  • Ruby/shell progamming
  • Nginx, Squid and LVS
  • iOS and andriod performance issue debug.
  • knowledge about javascript, python, php, object-c, etc.

job experience

  • 2009.6 to 2013.12 : renren.com – system engineer, senior system engineer, technical manager

    • Develop website monitor systems based on nagios, xulrunner, rrdtools
    • Realtime real-user-performance measurement tools and analyze with hadoop, establish QoS standards system.
    • Build large scale CDN systems for renren.com with Nginx, Squid and other technologis.
    • Online system performance tuning and troubleshooting
    • Leading a team of system engineer, provide system support to Dev teams.
  • 2014.01 till now : dajie.com – Senior System Operation Manager

    • System operation and MIS


  • 2005.9 Beijing Normal University – Bachelor of Computer Science