Technical content authored by engineers, for engineers.https://www.doist.dev/en-ushttps://www.doist.dev/optimizing-grdb-in-todoist-for-ioshttps://www.doist.dev/optimizing-grdb-in-todoist-for-iosThe hidden cost of LEFT JOINs in GRDBTue, 27 Jan 2026 00:00:00 GMTAndris Zālītishttps://www.doist.dev/building-ramble-3-visualizing-the-waveformhttps://www.doist.dev/building-ramble-3-visualizing-the-waveformHow we render a smooth, real-time audio waveform with Canvas in the browserFri, 02 Jan 2026 00:00:00 GMTRicardo Amaralhttps://www.doist.dev/building-ramble-2-capturing-audio-in-real-timehttps://www.doist.dev/building-ramble-2-capturing-audio-in-real-timeThe unexpected challenges of streaming microphone audio through modern browser APIsFri, 26 Dec 2025 00:00:00 GMTRicardo Amaralhttps://www.doist.dev/building-ramble-1-taming-the-microphonehttps://www.doist.dev/building-ramble-1-taming-the-microphoneThe surprising complexity behind asking users for microphone permission on the WebFri, 19 Dec 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Santoshttps://www.doist.dev/implementing-a-local-notification-scheduler-in-todoist-ioshttps://www.doist.dev/implementing-a-local-notification-scheduler-in-todoist-iosReliably schedule large amounts of local notifications on iOSWed, 08 Jan 2025 00:00:00 GMTNolan Warnerhttps://www.doist.dev/filter-assisthttps://www.doist.dev/filter-assistHow we leveraged AI to assist users when using our filter feature.Thu, 14 Mar 2024 00:00:00 GMTNatalie Mclarenhttps://www.doist.dev/our-donations-to-oss-in-2023https://www.doist.dev/our-donations-to-oss-in-2023Why and how we donated $5,189 across 17 projects and maintainers during 2024Tue, 16 Jan 2024 00:00:00 GMTHenning Muszynskihttps://www.doist.dev/ephemeral-consoleshttps://www.doist.dev/ephemeral-consolesThe journey of how we built an ephemeral consoles system to enable timely and secure access to production environments, without compromising on accountability.Wed, 20 Dec 2023 00:00:00 GMTArtyom 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Najamhttps://www.doist.dev/feature-flags-iron-session-nextjshttps://www.doist.dev/feature-flags-iron-session-nextjsServer side, Middleware and API route feature flags in Next.js with iron-sessionWed, 22 Mar 2023 00:00:00 GMTAnton Ballhttps://www.doist.dev/our-donations-to-oss-in-2022https://www.doist.dev/our-donations-to-oss-in-2022Why and how we donated $7295 across 14 projects and maintainers in 2022Fri, 30 Dec 2022 00:00:00 GMTGonçalo Silvahttps://www.doist.dev/async-engineering-mentorshiphttps://www.doist.dev/async-engineering-mentorshipMaster the art of onboarding and mentoring Engineers asynchronouslyFri, 16 Dec 2022 00:00:00 GMTPedro Santoshttps://www.doist.dev/async-test-projects-in-practicehttps://www.doist.dev/async-test-projects-in-practiceAn alternative test project format for your interviewsWed, 16 Nov 2022 00:00:00 GMTJan Kratochvílhttps://www.doist.dev/server-driven-ui-from-a-mobile-perspectivehttps://www.doist.dev/server-driven-ui-from-a-mobile-perspectiveThe what, why 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developers build specific UI componentsWed, 15 Sep 2021 00:00:00 GMTEnric Enrichhttps://www.doist.dev/embeddable-todoisthttps://www.doist.dev/embeddable-todoistThis is not an official project, but a fun one nonetheless.Tue, 24 Aug 2021 00:00:00 GMTSeva Zaikovhttps://www.doist.dev/designing-explainable-machine-learning-productshttps://www.doist.dev/designing-explainable-machine-learning-productsMistrust often comes from a lack of understandingTue, 20 Jul 2021 00:00:00 GMTDominic Monn