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List of concurrency patterns and best practices:

• take
• generator
• shard/split
• worker
• backoff
• backpressure
• rate-limit
• throttle
• to-type
• repeat
• error
• or
• or-done
• future
• fan-in
• fan-out
• cancellation
• deadline
• retry

Patterns of Event-Driven Processing

Based on the book, Designing Distributed System.

• Copier takes a single stream of work items and duplicate it out into two or more identical streams.
• Filter reduces the stream of work items to smaller stream of work items by filtering out work items that does not meet specific criteria.
• Splitter evaluates some criteria - just like filter - but instead of eliminating input, the splitter sends different inputs to different queues based on that criteria.
• Sharder divides up a single queue into an evenly divided collection of work items based upon some sharding function.
• Merger is the opposite of copier - it takes two different work queues and turn them into a single work queue.