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A postgresql backed cache system

Project description

DBCACHE

This small library allows to cache costly things within a postgresql table.

keys and values are bytes.

Example usage:

  from time import sleep
  from datetime import timedelta
  from dbcache.api import dbcache

  cache = dbcache('postgresql://foo:bar@postgresql/mydb')

  assert cache.get(b'a') is None
  cache.set(b'a', b'aaa')
  assert cache.get(b'a') == b'aaa'

  cache.set(b'b', b'bbb', lifetime=timedelta(seconds=1))
  assert cache.get(b'b') == b'bbb'
  sleep(1)
  assert cache.get(b'b') is None

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