view mod_storage_appendmap/README.markdown @ 3312:e714be00aaad

mod_conversejs: Factor JavaScript part out of HTML This will allow serving only the JS snippet in the future.
author Kim Alvefur <zash@zash.se>
date Mon, 10 Sep 2018 15:04:03 +0200
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