A basic Python package to store files in a LRU cache.
Project description
A tool to provide a LRU cache on files.
It has been created to store gigabytes of Thumbor thumbnails on a DigitalOcean server.
Usage
from pycachu import Pycachu
# Initialize the cache
# The dir has to exist
p = Pycachu('/storage/pycachu', 20 * (1024 ** 3))
# Get a file
f = p.get('/some/file')
if f is not None:
yield f
f.close()
else:
content = generate_file_content()
p.put('/some/file', content)
content.seek(0)
yield content
content.close()
Performance
The performance is not exceptional, but operations basically take a constant time independently of the number of files in the cache, which is not too bad.
Rough benchmarking gave about 170 get per second.
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