Vadim Samokhin questions

• RabbitMQ exchanges: default vs. direct
• Yii: adding custom fields
• What is memcache.hash_strategy for?
• Postgres: updating not-changed rows
• Mysql deadlock detection
• csrf protection
• lambda calculus in scala
• Getting three random dates from each hour
• object scalatest is not a member of package org
• scala inheritance issue: val vs. def

Vadim Samokhin answers