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Processes in a cluster can require controlled access to shared resources, tracking available processes, and sharing state. Unfortunately most tools in this category are oriented around Java. In this talk I cover how to use Python to interact with Apache Zookeeper -- a fault-tolerant consistent data-store -- to write coordinated distributed fault-tolerant applications in Python.
One of the most common tasks in modern web frameworks is to ease the task of writing bits of code that are then called by the framework. Handling this task is the first major undertaking of any web framework, and the part that most web frameworks have in common.
How do frameworks locate this code? What basic patterns apply to all frameworks? How does this make me be a better web programmer?