Spike Gronim questions

Spike Gronim answers

• Java concurrency with a Map of Lists
• Firebird for cloud application?
• Ruby on Rails: how do I find out where a method is called?
• Mocking open(file_name) in unit tests [duplicate]
• Forking Greenlets
• Modeling accounts for different types of users in Django
• Java Throttling
• How to elect new Master in Cluster? [duplicate]
• Does Python's `tarfile` module store the archives it's building in memory?
• How does hive/hadoop assures that each mapper works on data that is local for it?