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Web Locks API in Node.js and browser

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Race condition and deadlocks in asynchronous programming is not something strange but most of developers are not thinking about it and expects a miracle using promises and async/await. Parallel programming have well-known techniques and theory for concurrent computing and state management with different data structures to make them thread-safe. All those primitives like semaphore, mutex, spin-lock, monitors, barriers are usable for asynchronous programming as well but we may simplify them and combine with promises and sync/await to fulfill a concept of resource locking in single-threaded runtime.

While we are getting closer to real parallel programming with multi-threading in JavaScript we have Web locks API as a single and simple abstraction for all needs. It is already available in browsers and can be simply ported to node.js with a hope to reuse it for multi-threading as well with known limitations.

Timur Shemsedinov
Metarhia, Kiev Polytechnic Institute
  • Researcher, lecturer, open-source enthusiast, 25 years in IT
  • 3rd place in Ukraine by Github followers
  • CTO at Salucyber, Chief architect at Metarhia
  • Free video lectures > 200
  • Metarhia community organizer, speaker at >40 conferences
  • Expert in building distributed enterprise applications, systems architecture, cybernetics, system programming, DBMS, production automation, telemetry, network servers and protocols, system analysis
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