Marek Majkowski

April 06, 2020 12:00PM

We were wondering - can we just enable Linux "conntrack"? How does it actually work? I volunteered to help the team understand the dark corners of the Linux's "conntrack" stateful firewall subsystem....

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  Marek Majkowski

March 02, 2020 1:00PM

Last month finally I had an opportunity to use Bloom filters. I became fascinated with the promise of this data structure, but I quickly realized it had some drawbacks. This blog post is the tale of my brief love affair with Bloom filters....

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  Marek Majkowski

September 20, 2019 4:53PM

We noticed something weird - the TCP sockets which we thought should have been closed - were lingering around. We realized we don't really understand when TCP sockets are supposed to time out! We naively thought enabling TCP keepalives would be enough... but it isn't!...

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  Marek Majkowski

September 20, 2019 4:53PM

닫혀 있어야 할 TCP 소켓이 계속 남아 있다는 이상한 점을 깨닫게 되었습니다. TCP 소켓이 언제 타임 아웃되는지 제대로 이해하고 있지 않았던 것입니다! TCP 킵얼라이브만 켜 두면 될 거라 생각했습니다만... 그렇지 않았습니다!...

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  Marek Majkowski

September 20, 2019 4:53PM

在我们的Spectrum服务器上工作时，我们注意到了一些奇怪的现象：我们认为应该关闭了的TCP套接字一直在徘徊。我们意识到我们并不真正了解TCP套接字何时应该超时！...

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  Marek Majkowski