Merge branch 'stable-2.12'

* stable-2.12:
  Evict idle connections after a configurable amount of time

Change-Id: If2d547a85d0162493da4bc2c22615001b103764e
tree: 0cd90f9c43b4acec60af15dc2a2957eae82e8da6
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK