Lightweight Ruby library for executing tasks in a seperate Ruby subprocesses
Ruby very rarely releases memory back to the operating system once allocated. This gem realizes a neat trick as suggested by the Book "Ruby Performance Optimization" by Alexander Dymo: https://pragprog.com/book/adrpo/ruby-performance-optimization
The crucial point is that exiting a subprocess will force Ruby to release all the memory allocated in the subprocess back to the OS.
class DecadentMemoryConsumer
…
# Needs a lot of memory
# to execute some magical
# task
…
end
# If the predicate :memory_almost_exceeded? evaluates to true,
# the block will be executed in a forked subprocess
# that is forced to terminate afterwards
Diverter.new(condition: memory_almost_exceeded?) do
DecadentMemoryConsumer.perform_memory_expensive_operation
end
# condition defaults to true, so this is equivalent of condition set to true
Diverter.new do
DecadentMemoryConsumer.perform_memory_expensive_operation
end
Initial version
FAQs
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We found that diverter demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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