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levleontiev

36 karma · joined July 11, 2015

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levleontiev··on Ask HN: What Are You Working On? (March 2026)
Working on Fairvisor — a tool for API governance and usage control.

The problem: one buggy integration, scraper, or infinite retry loop can suddenly explode your API costs or overload infrastructure before anyone notices.

Fairvisor acts as a guardrail in front of your API:

per-tenant and per-route rate limits

request budgets and soft/hard caps

anomaly alerts for sudden spikes

The edge component is open source (OpenResty / Nginx + Lua) and the SaaS part provides policy management and audit.

Still early, validating whether teams would use something like this instead of building internal scripts.

https://github.com/fairvisor/edge

levleontiev··on We can't have nice things because of AI scrapers
I am terribly sorry for self-advertising, but:

I am just now busy building a solution: self-hosted sophisticated rate-limiting.

More complex than nginx, more private than cloudfare. Please joint the waitlist if you want to morally support me ;)

https://getfairvisor.com/

levleontiev··on AI crawlers, fetchers are blowing up websites; Meta, OpenAI are worst offenders
That's why I am building a Rate Limiter as a service. Seems that it has its niche.
levleontiev··on XZ backdoor story – Initial analysis
Sorry if I trigger anyone's paranoia, but 1. who told you that it's not a state-backed attack? 2. and if 1 is true, who told it, it's not Russia staying behind it?

and if 2 is true, the KGB university alumni Kaspersky definitely is related to it.

levleontiev··on You do need a technical co-founder [video]
>does he get penalized if part of the dev team gets hired by another company, which makes it harder for him to hit the milestones?

Of course yes. The part of executive responsibility is to maintain the team and calculate the riscs .

levleontiev··on SpaceX Starship Super Heavy Project at the Boca Chica Launch Site
Is it only me who sees BDSM logo here?
levleontiev··on Meduza co-founder's phone infected with Pegasus
Also interesting that a new “bad guy” from the Caucasus might be the actual attacker.
levleontiev··on Azerbaijan government launches targeted malware attacks
and it's even not the first goverment backed attacks: https://www.qurium.org/alerts/news-media-websites-attacked-f... (2017)

https://about.fb.com/wp-content/uploads/2022/04/Meta-Quarter... (2022)

levleontiev··on Ask HN: How to deal with regret of not having kids
The window is not closed.

I am 42, my wife is 41. Our youngest child is 8 month old.

levleontiev··on Infosys asked HR not to hire 'Indian-origin candidates', 'women with children'
Compared with German, it's complicated. German has only "Past Perfect" and "Past simple" tenses.

English has at least 4.

levleontiev··on Navalny team releases investigation into ′Putin′s Palace′
>I am not a Russian

What will you do with 15 roubles earned by writing this comment then?

levleontiev··on Russia opposition leader poisoned with Novichok
>They aren't idiots Petrov and Boshirov with very similar travel documents and a lot of different evidences aren't idiots?
levleontiev··on Russia opposition leader poisoned with Novichok
B. Also it's named "Lahta" by the region where their office is .
levleontiev··on New German law would force ISPs to allow secret service to install trojans
>Just because you worked for the Stasi automatically makes you a bad fit for a certain job.

I am sorry, I am from Russia initially, the KGB-land. No, it's not an over-generalization.

levleontiev··on Ask HN: Best iOS apps for speechless child?
Thanks!

I am probably not clear enough: he already uses some kind of this app, thank god it's covered by medical insurance in our country.

What I am searching for is something with chars to teach him literacy. I want him to type "I-C-E-C-R-E-A-M" instead of choosing "icecream" pictogram and make ipad pronounce it.

levleontiev··on Coronavirus cure crowdsourcing?
Have seen it right after the posting ;)
levleontiev··on Coronavirus cure crowdsourcing?
Somehow yes, btw. Success will be a great success story of crowdsourcing.
levleontiev··on Russia Bans 1.8M Amazon and Google IPs in Attempt to Block Telegram
4.5M already.