The irony isn’t lost on us, trust me. We spent a while debating whether to even publish this one.

But yeah, the page cache point is real and massively underappreciated. Modern infrastructure discourse skips past it almost entirely. A warm NVMe-backed file with the OS doing the caching is genuinely fast enough for most early-stage products.

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tracker1 9 hours ago | parent | next [-]

Definitely appreciate the post and the discussion that has come from it... While I'm still included to just reach for SQLite as a near starting point, it's often worth considering depending on your needs.

In practice, I almost always separate the auth chain from the service chain(s) in that if auth gets kicked over under a DDoS, at least already authenticated users stand a chance of still being able to use the apps. I've also designed auth system essentially abstracted to key/value storage with adapters for differing databases (including SQLite) for deployments...

Would be interested to see how LevelDB might perform for your testing case, in that it seems to be a decent option for how your example is using data.

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vovanidze 13 hours ago | parent | prev | next [-]

props for actually publishing it tbh. transparent engineering takes are so rare now, usually its just seo fluff.

weve basically been brainwashed to think we need kubernetes and 3 different databases just to serve a few thousand users. gotta burn those startup cloud credits somehow i guess.

mad respect for the honesty though, actually makes me want to check out db pro when i finally outgrow my flat files.

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upmostly 12 hours ago | parent | next [-]

I'm feel like I could write another post: Do you even need serverless/Cloud because we've also been brainwashed into thinking we need to spend hundreds/thousands a month on AWS when a tiny VPS will do.

Similar sentiment.

	▲	vovanidze 6 hours ago \| parent \| next [-]
		id 100% read that post. the jump from free tier serverless to why is my aws bill $400 this month for a hobby project is a rite of passage at this point. a $5 hetzner or digitalocean box with dokku/docker-compose is basically a superpower that most newer devs just bypass entirely now.
	▲	hilariously 12 hours ago \| parent \| prev \| next [-]
		You are both right, with the exception that it requires knowledge and taste to accomplish, both of which are in short supply in the industry. Why setup a go binary and a json file? Just use google forms and move on, or pay someone for a dead simple form system so you can capture and commmunicate with customers. People want to do the things that make them feel good - writing code to fit in just the right size, spending money to make themselves look cool, getting "the right setup for the future so we can scale to all the users in the world!" - most people don't consider the business case. What they "need" is an interesting one because it requires a forecast of what the actual work to be done in the future is, and usually the head of any department pretends they do that when in reality they mostly manage a shared delusion about how great everything is going to go until reality hits. I have worked for companies getting billions of hits a month and ones that I had to get the founder to admit there's maybe 10k users on earth for the product, and neither of them was good at planning based on "what they need".
	▲	hooverd 10 hours ago \| parent \| prev [-]
		Serverless is cheap as hell as low volumes. Your tiny VPS can't scale to zero. If you're doing sustained traffic your tiny VPS might win though. The real value in Cloud is turning capex spend into opex spend. You don't have to wait weeks or months to requisition equipment.

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locknitpicker 10 hours ago | parent | prev [-]

> weve basically been brainwashed to think we need kubernetes and 3 different databases just to serve a few thousand users. gotta burn those startup cloud credits somehow i guess.

I don't think it makes any sense to presume everyone around you is brainwashed and you are the only soul cursed with reasoning powers. Might it be possible that "we" are actually able to analyse tradeoffs and understand the value of, say, have complete control over deployments with out of the box support for things like deployment history, observability, rollback control, and infrastructure as code?

Or is it brainwashing?

Let's put your claim to the test. If you believe only brainwashed people could see value in things like SQLite or Kubernetes, what do you believe are reasonable choices for production environments?

	▲	vovanidze 6 hours ago \| parent [-]
		i think you missed the "on day 1" part of my comment. k8s, iac, and observability are incrdible tools when you actually have the scale and team to justifiy them. my point is strictly about premature optimizaton. ive seen teams spend their first month writing helm charts and terraform before they even have a single paying user. if you have product-market fit and need zero-downtime rollbacks, absolutly use k8s. but if youre just validatng an mvp, a vps and docker-compose (or sqlite) is usually enough to get off the ground. its all about trade-offs tbh.

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grep_it 12 hours ago | parent | prev [-]

Except that eventually you'll find you lose a write when things go down because the page cache is write behind. So you start issuing fsync calls. Then one day you'll find yourself with a WAL and buffer pool wondering why you didn't just start with sqlite instead.