view mod_storage_appendmap/README.markdown @ 3360:0149954cee37

mod_http_upload_external: Add note about correct behaviour in the presence of multiple versions
author Matthew Wild <mwild1@gmail.com>
date Sun, 21 Oct 2018 15:19:58 +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