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Mike Lang 44d0c0269a cache results of common.segments.best_segments_by_start ... The restreamer spends most of its time iterating through segments (parsing them, determining the best one for each start time) to serve large time ranges. Since this only depends on the list of filenames read from disk, we can cache it for a given hour as long as that list is identical. This is a little trickier than it sounds because best_segments_by_start is an iterator and in most cases it won't be fully consumed. So we introduce a `CachedIterator` abstraction that will both remember the previously yielded values, and keep track of the live iterator so it can be resumed again if a previous invocation only partially consumed it. This also has the nice side effect of merging simultaneous operations - if two requests come in for the same hour at the same time, they'll share one iterator and both consume the results as they come in.		3 years ago
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common	cache results of common.segments.best_segments_by_start	3 years ago
setup.py	Unpin gevent as that was a workaround for a py2 issue	3 years ago