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From: Magnus Hagander <[email protected]>
To: pgadmin-hackers <[email protected]>
Subject: Somewhat excessive version checks
Date: Mon, 11 Jan 2021 23:05:44 +0100
Message-ID: <CABUevEyMFa0ti59E0CkZfcNDdo6tgtX4PZcXqrK54KzKFfVCBA@mail.gmail.com> (raw)

Hi!

If I read the code correctly, pgadmin will (unless turned off) hit the
website to check the version.json file for updates *every time it
starts*.

Wouldn't it make sense to rate limit that to checking say once per 24
hours maximum? Or even 48?

It seems nobody needs the update *that* quickly, and AFAICT it does
call out to make that check synchronously on startup which means the
user is waiting.

And if/when doing that, it would be useful to include an
If-Modified-Since header on the request, so the server can just
respond with a tiny 304 reply when there is no update, which is going
to be the majority of the time. Or possibly even more efficiently,
create a custom etag and use If-None-Matches. If you make that etag be
say the version that the client has, it becomes very cheap to check
and you don't need to track any extra data.

-- 
 Magnus Hagander
 Me: https://www.hagander.net/
 Work: https://www.redpill-linpro.com/





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