File

mod_storage_appendmap/README.markdown @ 4530:33c149d0261d

mod_rest: Add mappings for a whole pile of XEPs Look ma, programming in JSON! XEP-0012: Last Activity XEP-0077: In-Band Registration XEP-0115: Entity Capabilities XEP-0153: vCard-Based Avatars XEP-0297: Stanza Forwarding XEP-0308: Last Message Correction XEP-0319: Last User Interaction in Presence XEP-0333: Chat Markers XEP-0367: Message Attaching XEP-0372: References XEP-0421: Anonymous unique occupant identifiers for MUCs XEP-0428: Fallback Indication XEP-0444: Message Reactions
author Kim Alvefur <zash@zash.se>
date Tue, 23 Mar 2021 23:18:33 +0100
parent 2818:88474dd1af48
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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