A personal site by Marty — software, hardware, AI, gaming, finance, homesteading, and whatever else is on my mind.https://martyw.dev/https://martyw.dev/notes/rapier-for-the-game-engine/https://martyw.dev/notes/rapier-for-the-game-engine/Thu, 04 Jun 2026 10:01:00 GMTsoftwaregamingjavascriptwebhttps://martyw.dev/notes/comments-are-down-thats-the-deal/https://martyw.dev/notes/comments-are-down-thats-the-deal/Mon, 01 Jun 2026 11:08:00 GMTmetasoftwarewebtoolshttps://martyw.dev/posts/stable-urls-without-a-redirect-table/https://martyw.dev/posts/stable-urls-without-a-redirect-table/A short random prefix plus a throwaway slug gives you URLs that survive title changes — no UUID ugliness, no slug-history table. Plus why the collision-retry loop matters more than the keyspace suggests.Mon, 01 Jun 2026 00:00:00 GMTsoftwarewebapishttps://martyw.dev/posts/how-this-blog-gets-written/https://martyw.dev/posts/how-this-blog-gets-written/How posts and notes here actually get made — AI-assisted, with a structured pass that flags speculation rather than laundering it as fact.Fri, 29 May 2026 00:00:00 GMTmetaaitoolshttps://martyw.dev/notes/arcade2d-finally-started/https://martyw.dev/notes/arcade2d-finally-started/Thu, 28 May 2026 10:00:00 GMTsoftwaregamingjavascriptwebhttps://martyw.dev/notes/new-site-new-shape/https://martyw.dev/notes/new-site-new-shape/Thu, 28 May 2026 09:00:00 GMTmetaaishowerthoughthttps://martyw.dev/posts/my-2026-tech-stack/https://martyw.dev/posts/my-2026-tech-stack/Two years on from the 2024 list. The shipping-code part has changed completely; most of the rest looks the same — and where it doesn't, the reasons are worth knowing.Thu, 28 May 2026 00:00:00 GMTsoftwarewebaimetatoolshttps://martyw.dev/posts/rent-vs-buy-spreadsheet/https://martyw.dev/posts/rent-vs-buy-spreadsheet/For a couple of years I was sure that renting and tipping the difference into index funds beat buying. Then I bought a smaller, older house on a worse street — and worked out what the spreadsheet had been missing about leverage and tax.Wed, 20 May 2026 00:00:00 GMTfinancehomesteadhttps://martyw.dev/notes/caches-need-an-invalidation-story/https://martyw.dev/notes/caches-need-an-invalidation-story/Fri, 29 Aug 2025 09:00:00 GMTsoftwarewebhttps://martyw.dev/posts/promise-all-isnt-batching/https://martyw.dev/posts/promise-all-isnt-batching/When parallelising N small queries looks like a fix and is really just self-DoS at a slightly higher concurrency level.Tue, 26 Aug 2025 00:00:00 GMTsoftwarejavascriptwebapishttps://martyw.dev/notes/group-in-the-database/https://martyw.dev/notes/group-in-the-database/Tue, 19 Aug 2025 09:00:00 GMTsoftwarehttps://martyw.dev/posts/write-batch-shaped-functions-by-default/https://martyw.dev/posts/write-batch-shaped-functions-by-default/Why I write repository methods that take arrays and return Maps, even when the only caller — today — is asking for one thing.Tue, 12 Aug 2025 00:00:00 GMTsoftwarejavascriptapishttps://martyw.dev/notes/dataloader-cache-off-by-default/https://martyw.dev/notes/dataloader-cache-off-by-default/Wed, 06 Aug 2025 09:00:00 GMTsoftwarejavascripthttps://martyw.dev/posts/batching-requests-we-dont-control/https://martyw.dev/posts/batching-requests-we-dont-control/How pushing dataloader up to the HTTP controller — out of the resolver layer it usually lives in — cut downstream database load by 83% on a read-heavy endpoint.Fri, 07 Mar 2025 00:00:00 GMTsoftwarewebjavascriptapishttps://martyw.dev/posts/my-2024-tech-stack/https://martyw.dev/posts/my-2024-tech-stack/What I'm reaching for this year — languages, frameworks, infra — and why.Thu, 07 Mar 2024 00:00:00 GMTsoftwarewebmetatoolshttps://martyw.dev/posts/javascript-game-development-engine-ideas/https://martyw.dev/posts/javascript-game-development-engine-ideas/Where the JavaScript game-engine landscape has gaps, and how I'd fill them if I built one.Mon, 04 Mar 2024 00:00:00 GMTsoftwaregamingjavascriptwebhttps://martyw.dev/posts/thoughts-on-graphql-after-2-years/https://martyw.dev/posts/thoughts-on-graphql-after-2-years/What two years of running a production GraphQL service taught me about where it earns its keep and where it doesn't.Mon, 21 Nov 2022 00:00:00 GMTsoftwaregraphqlwebapis