view mod_storage_appendmap/README.markdown @ 4814:5f12c75fd210

mod_muc_moderation: Handle non-retraction moderation The XEP is light on details and does not show any example of non-retraction uses.
author Kim Alvefur <zash@zash.se>
date Tue, 07 Dec 2021 20:36:13 +0100
parents 88474dd1af48
children
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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