October 2010
3 posts
Core dumps on OS X
Core dumps are switched off by default.
Make OS X do a core-dump upon a segmentation fault:
ulimit -c unlimited
Unlike Linux, in OS X core dumps end up in /cores instead of the cwd.
gdb /path/to/your/binary /cores/core.XYZ
Sharding gone wrong →
Foursquare Ops publish a post mortem of their recent outage on their blog. The post made by MongoDB engineer in the google group is actually more interesting since it reveals more of the technical details, and what went wrong specifically because of MongoDB’s behavior.
“In bureaucracies many people have the authority to say no, not the authority to...”
– John Sculley On Steve Jobs, The Full Interview Transcript | Cult of Mac