view mod_storage_appendmap/README.markdown @ 4182:1890115b2773

mod_http_muc_log: Move template into a directory to ease packaging There's no LuaRocks directive like `copy_directories` for individual files, short of writing a whole custom installation method.
author Kim Alvefur <zash@zash.se>
date Thu, 08 Oct 2020 16:39:19 +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