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If you’re like most people, your answer to this is… “What? Why?” When ssh was introduced back in the 1990s, its appeal was simple. Passwords are too short, too guessable, too phishable, too often stored incorrectly, too MITM-able, too brute-forceable. Also its primary competition was rsh’s classic “no

Database systems typically give users the ability to trade off correctness for performance. In distributed systems, there is a whole other category for trading off correctness for performance: consistency levels. There are an increasing number of distributed database systems that are giving their users multiple different consistency levels to choose

Say you run an online book store and want to build a data pipeline that figures out who the top-selling authors are. Logically, the input to the pipeline is a log of every individual book purchase on the store for all time, along with details about each book like who

For those who don’t follow Swift’s development, ABI stability has been one of its most ambitious projects and possibly it’s defining feature, and it finally shipped in Swift 5. The result is something I find endlessly fascinating, because I think Swift has pushed the notion of ABI

Avoiding the Death Spiral Wide RAID stripes are often used by administrators to maximise usable storage for a number of spindles. For a number of reasons, RAID-Z deployments with large strip widths, ten or larger, are subject to low resilver performance. Resilvering a full vdev means reading from any healthy

In a time full of ransomware as well as Advanced persistent Thread (APT) incidents the importance of detecting those attacking groups has become increasingly important. Some years ago the best tools/techniques for security incident detection and response included a SIEM-system filled with logs from IPS/IDS systems, proxies, firewalls,