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Reddit Unveils REV2: Modernised Rule-Execution with Kubernetes, Kafka, and Flink Stateful Functions
Reddit's Safety Engineering team recently published how it modernised its Rule-Execution system, which detects and acts on policy-violating content in real time. The new architecture includes improvements like transitioning from legacy EC2-based systems to Kubernetes, better rule version control with Github and S3 storage, and the capability to scale more efficiently with Flink Stateful Functions.
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GitHub Scales Its Rate Limiter Using Redis
Yesterday GitHub engineer Robert Mosolgo posted a detailed account of how GitHub scaled the GitHub API with a sharded, replicated rate limiter in Redis. GitHub migrated from an older Memcached-based rate limiter to a Redis-based one. According to Mosolgo, the new implementation has improved reliability, fixed issues for clients, and reduced GitHub's support load.
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Load Balancing Search Traffic at Algolia with NGINX and OpenResty
Algolia’s engineering team made the switch from round-robin DNS load-balancing to a mix of DNS and NGINX with OpenResty. The solution, which uses custom Lua and Go code, and Redis-based service discovery of backend servers, helped in distributing load across their app servers and preventing latency issues.
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GoTo Copenhagen 2017: How Shopify Powers Online Commerce
Simon Hørup, senior product engineering lead at Shopify, gave an overview of how Shopify is architectured to support large sales at GoTo Copenhagen 2017. This included their OpenResty configured NGINX instances, shop and pod isolation architecture, failover strategies and more.
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Facebook Open-Sources Deep Learning Project Torchnet
Facebook Artificial Intelligence Research laboratory open-sources the Torchnet project to package and optimize boiler plate deep learning code for reuse and plugin-ability.
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lua.vm.js – Running Lua VM in a JavaScript VM
Mozilla is showing off the strength of asm.js by running the entire Lua VM in a JavaScript VM, with the ability to call JS code.
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Languages Come to Javascript VMs: CoffeeScript 1.0, StratifiedJS, C/C++ with Emscripten, Python
Javascript's ubiquity and increasingly fast VMs have made it an interesting runtime for languages. InfoQ looks at languages and tools that compile to Javascript: CoffeeScript 1.0, StratifiedJS, the Emscripten LLVM backend which brings C/C++ to Javascript, and more.
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Languages Come to Javascript VMs: CoffeeScript 1.0, StratifiedJS, C/C++ with Emscripten, Python
Javascripts ubiquity and increasingly fast VMs have made it an interesting runtime for languages. InfoQ looks at languages and tools that compile to Javascript: CoffeeScript 1.0, StratifiedJS, the Emscripten LLVM backend which brings C/C++ to Javascript, and more.
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Lua: Embeddable Scripting Engine, LuaJIT 2.0 Includes New High-Performance VM
Lua is a scripting language that can be embedded in any application that can provide hooks for its C API. Version 2.0 of its JIT compiler is in Beta and includes a completely re-written VM based on a trace compiler and an interpreter written in assembler.