File

mod_storage_appendmap/README.markdown @ 3716:3db27b8f1cb0

mod_http_muc_log: Add button-link to webchat URL if one is set via mod_muc_webchat_url This has been hacked in manually in a few deployments.
author Kim Alvefur <zash@zash.se>
date Sun, 13 Oct 2019 16:24:16 +0200
parent 2818:88474dd1af48
line wrap: on
line source

---
labels:
- 'Stage-Alpha'
- 'Type-Storage'
summary: Experimental map store optimized for small incremental changes
...

This is an experimental storage driver where changed data is appended.
Data is simply written as `key = value` pairs to the end of the file.
This allows changes to individual keys to be written without needing to
write out the entire object again, but reads would grow gradually larger
as it still needs to read old overwritten keys. This may be suitable for
e.g. rosters where individual contacts are changed at a time. In theory,
this could also allow rolling back changes.

Requires 0.10