view mod_storage_appendmap/README.markdown @ 2339:443d9dae3216

mod_track_muc_joins: Bump priority up over mod_presence to ensure event is caught
author Kim Alvefur <zash@zash.se>
date Thu, 20 Oct 2016 22:07:50 +0200
parents b84284144e21
children 88474dd1af48
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---
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
eg rosters where individual contacts are changed at a time. In theory,
this could also allow rolling back changes.

Requires 0.10