I have billing system on GAE.
It is thing to have backup of my datastore. Now I have small record count
and can read all of it for backup every day. But in future - I need any
incremental method of backup my data.
I have 3 things:
- log operations in logging system and replicate on my server.
- log operations in log kind and replicatite on my server (but it add pay
for write, read and delete operations for each logical change in datastore).
- save timestamp field in my entities and log of deleted object.

save data small in log - cheap and faster then write it in datastore.

2011/9/29 Jan Zawadzki / Hapara <[email protected]>

> This only works if you don't have a lot of traffic.
>
> As Ikai mentioned, these are limited-size FIFO logs, so if you start
> hitting any significant traffic, you will find that your INFO logs
> hold a minute's worth of data - longer than a transfer would take you.
>
> Write to a DB, OR, use RPC and URL fetch to "ping" an external server
> that will store the Apache log files for you.
>
> J
>
> On Sep 28, 10:06 am, rekby <[email protected]> wrote:
> > Do log record gurantee for each request - I want write into log
> instructions
> > for incremental change data and make incremental backup on my computer by
> > download  and parse log messages instead of analise datastore.
>
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