File

mod_storage_appendmap/README.markdown @ 2991:9d205ec1fa00

mod_query_client_ver: Fix check for sessions on the current host
author Kim Alvefur <zash@zash.se>
date Wed, 04 Apr 2018 16:32:51 +0200
parent 2818:88474dd1af48
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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
e.g. rosters where individual contacts are changed at a time. In theory,
this could also allow rolling back changes.

Requires 0.10