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What the research is:  Millisampler is one of Meta’s latest characterization tools and allows us to observe, characterize, and debug network performance at high-granularity timescales efficiently. This lightweight network traffic characterization tool for continual monitoring operates at fine, configurable timescales. It collects time series of ingress and egress traffic volumes, number of active flows, incoming [...] Read More... The post A fine-grained network traffic analysis with Millisampler appeared first on Engineering at Meta. http://dlvr.it/SmdBPl

WhatsApp has launched a new security feature that further helps prevent attackers from using vectors like on-device malware. This security feature, called Device Verification, requires no action or additional steps from users and helps protect your account. This feature is part of our broader work to increase security for our users from the growing threat [...] Read More... The post How Device Verification protects your WhatsApp account appeared first on Engineering at Meta. http://dlvr.it/SmQlTn

We’re sharing how Meta delivers high-quality audio at scale with the xHE-AAC audio codec. xHE-AAC has already been deployed on Facebook and Instagram to provide enhanced audio for features like Reels and Stories.  At Meta, we serve every media use case imaginable for billions of people across the world — from short-form, user-generated content, such [...] Read More... The post Why xHE-AAC is being embraced at Meta appeared first on Engineering at Meta. http://dlvr.it/SmKJCw

Buck2, our new open source, large-scale build system, is now available on GitHub. Buck2 is an extensible and performant build system written in Rust and designed to make your build experience faster and more efficient.  In our internal tests at Meta, we observed that Buck2 completed builds 2x as fast as Buck1. Buck2, Meta’s open [...] Read More... The post Build faster with Buck2: Our open source build system appeared first on Engineering at Meta. http://dlvr.it/Sm5M7x