Simon Willison’s Weblog

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Wednesday, 9th September 2009

Looking to the future with Cassandra. Digg are now using Cassandra for their “green badge” (one of your friends have dugg this story) feature—the resulting denormalised dataset weighs in at 3 TB and 76 billion columns.

# 9:26 pm / cassandra, denormalisation, digg, nosql

Why Python Pickle is Insecure. Because pickle is essentially a stack-based interpreter, so you can put os.system on the stack and use it to execute arbitrary commands.

# 11:04 pm / pickle, python, security

Londiste Tutorial. Master/slave replication for PostgreSQL, developed and used by Skype.

# 11:06 pm / londiste, masterslave, postgresql, replication, skype

2009 » September

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