view mod_storage_appendmap/README.markdown @ 4771:e227af629736

mod_smacks: Send <r> immediately from csi-flushing event Using a timer serves no purpose in this case, only serves to increase the number of write syscalls and TCP segments sent.
author Kim Alvefur <zash@zash.se>
date Tue, 16 Nov 2021 13:39:49 +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