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#self-hosting
2 posts
Systems debugging
9 min
VictoriaMetrics already had downsampling, under another name
Downsampling is an enterprise feature in VictoriaMetrics. The open-source binary already keeps the last sample per interval during merges and calls it deduplication. Make the interval depend on the sample's age and you have tiers. The patch is 213 lines and has applied cleanly to five releases.
#victoriametrics#prometheus#monitoring#go
Systems debugging
8 min
Relaying a self-hosted mail server through Cloudflare
A personal mail server can receive on its own, but sending needs a relay with a reputation. Mine was rewriting my links and adding tracking pixels. Cloudflare now sells a plain SMTP relay on the five-dollar Workers plan, and the cutover is one token, six postconf lines, and a bounce domain Cloudflare maintains for you.
#email#postfix#cloudflare#dkim