768812 - Compress offline cache

Status: RESOLVED WONTFIX

(Core :: Networking: Cache, defect)

Description

[Mike Hommey [:glandium]]

Disk is slow, CPU is fast. This is especially true on B2G. The offline cache makes for a big part of the data stored on the data partition on B2G, and it's very slow to read, which makes first start of application slower.

We should thus compress the offline cache.

There may need to be an incremental approach, so that existing uncompressed offline cache still works.

Comment 1

[Mike Hommey [:glandium]]

(In reply to Mike Hommey [:glandium] from comment #0)
> There may need to be an incremental approach, so that existing uncompressed
> offline cache still works.

And we may not want to compress e.g. PNGs.

Comment 2

[Honza Bambas (:mayhemer)]

Adding Michal and Nick.  I remember there were some code added to have compression in HTTP cache by default.  Maybe the same mechanism could be simply used to have the same feature for offline cache.