[{"data":1,"prerenderedAt":241},["ShallowReactive",2],{"api:\u002Fapi\u002Fconfig:en":3,"api:\u002Fapi\u002Fprofile:":8,"api:\u002Fapi\u002Fcategories:en":19,"api:\u002Fapi\u002Fprojects\u002Frealtime-rooms:en":171,"api:\u002Fapi\u002Fnotes:en":222},{"email":4,"lang":5,"name":6,"role":7},"djrciv@gmail.com","en","Ewsirdev","Web developer: websites, landing pages and Go services",{"name":6,"handle":6,"contacts":9,"note":18},{"email":10,"github":12,"telegram":15},{"url":11,"label":4},"mailto:djrciv@gmail.com",{"url":13,"label":14},"https:\u002F\u002Fgithub.com\u002Fewsir247","github.com\u002Fewsir247",{"url":16,"label":17},"https:\u002F\u002Ft.me\u002FEwsirdev","@Ewsirdev","Contacts: Telegram, GitHub, email. This file is the single source of contacts for the site, the contact block, JSON-LD sameAs, security.txt and llms.txt.",[20,49,80,108,142],{"slug":21,"title":22,"blurb":23,"variant":24,"palette":25,"layout":26,"count":27,"preview":28,"stack":44},"landings","Landing pages","One page, one job. Hand-written markup where possible, plus one WebGL experiment.","ink","cold","shots",6,[29,34,39],{"slug":30,"title":31,"shot":32,"hue":33},"landing-studio","Halftone: lighting studio","\u002Fshots\u002Flanding-studio-desktop-sm.webp",212,{"slug":35,"title":36,"shot":37,"hue":38},"landing-saas","Kill Switch: subscription tracker","\u002Fshots\u002Flanding-saas-desktop-sm.webp",182,{"slug":40,"title":41,"shot":42,"hue":43},"landing-event","Small Scale: conference","\u002Fshots\u002Flanding-event-desktop-sm.webp",124,[45,46,47,48],"CSS","HTML","GitHub Actions","JS",{"slug":50,"title":51,"blurb":52,"variant":53,"palette":54,"layout":55,"count":56,"langs":57,"preview":61,"stack":77},"sites","Multi-page sites","Sites with their own structure, routing and forms: from a client project to a set of niche pages.","honey","mono","frames",4,[58],{"lang":59,"count":60},"TypeScript",1,[62,67,72],{"slug":63,"title":64,"shot":65,"hue":66},"legal-multipage-site","Multi-page legal services website","\u002Fshots\u002Flegal-multipage-site-desktop-sm.webp",250,{"slug":68,"title":69,"shot":70,"hue":71},"niche-landings","Catalog of 10 niche demo landing pages","\u002Fshots\u002Fniche-landings-desktop-sm.webp",32,{"slug":73,"title":74,"shot":75,"hue":76},"docs-engine","Sverlo: a documentation generator in Node.js","\u002Fshots\u002Fdocs-engine-desktop-sm.webp",25,[47,59,78,79],"Vue 3","Astro",{"slug":81,"title":82,"blurb":83,"variant":84,"palette":85,"layout":86,"count":87,"langs":88,"preview":90,"stack":105},"apps","Web apps","Interface plus server: auth, data, e-mail. Apps you sign in to.","beads","warm","phone",3,[89],{"lang":59,"count":60},[91,96,101],{"slug":92,"title":93,"shot":94,"hue":95},"bad-club-booking-app","Bad Club: seat booking for a gaming coworking space","\u002Fshots\u002Fbad-club-booking-app-desktop-sm.webp",150,{"slug":97,"title":98,"shot":99,"hue":100},"typing-lab","typing-lab: a touch-typing trainer","\u002Fshots\u002Ftyping-lab-desktop-sm.webp",45,{"slug":102,"title":103,"shot":104,"hue":100},"budget-split","budget-split: shared expense tracker","\u002Fshots\u002Fbudget-split-desktop-sm.webp",[59,106,78,107],"Vite","axe",{"slug":109,"title":110,"blurb":111,"variant":112,"palette":113,"layout":114,"count":115,"langs":116,"preview":123,"stack":139},"backend","Backends","Services with an API, a database and tests: mostly Go, with some in Python and TypeScript. A language filter sits inside the section.","ferro","acid","list",14,[117,120,122],{"lang":118,"count":119},"Go",12,{"lang":121,"count":60},"Python",{"lang":59,"count":60},[124,129,134],{"slug":125,"title":126,"shot":127,"hue":128},"kanban-tasks","Amber: kanban board","\u002Fshots\u002Fkanban-tasks-desktop-sm.webp",344,{"slug":130,"title":131,"shot":132,"hue":133},"link-shortener","Short: link shortener","\u002Fshots\u002Flink-shortener-desktop-sm.webp",111,{"slug":135,"title":136,"shot":137,"hue":138},"booking-slots","Appointment booking","\u002Fshots\u002Fbooking-slots-desktop-sm.webp",65,[140,118,141,47],"Docker","SQLite",{"slug":143,"title":144,"blurb":145,"variant":146,"palette":25,"layout":147,"count":87,"langs":148,"preview":152,"stack":168},"cli","CLI tools","Terminal programs: one binary, clear flags, an exit code you can check in a script.","film","terminal",[149,151],{"lang":118,"count":150},2,{"lang":121,"count":60},[153,158,163],{"slug":154,"title":155,"shot":156,"hue":157},"gitpulse","GitPulse: git repository analytics","\u002Fshots\u002Fgitpulse-desktop-sm.webp",7,{"slug":159,"title":160,"shot":161,"hue":162},"logslice","logslice: log analysis with no dependencies","\u002Fshots\u002Flogslice-desktop-sm.webp",160,{"slug":164,"title":165,"shot":166,"hue":167},"envguard","envguard: a linter and a safe for .env files","\u002Fshots\u002Fenvguard-desktop-sm.webp",35,[169,140,47,170],"CLI","stdlib only",{"slug":172,"title":173,"type":109,"category":109,"lang":118,"kind":174,"live_url":175,"stack":176,"description":179,"highlights":180,"run":185,"hue":186,"og":187,"shots":188,"case":196,"case_lang":5,"prev":215,"next":218,"has_eng":221},"realtime-rooms","Rooms: realtime chat and board","realtime","https:\u002F\u002Frealtime-rooms.ewsir.space",[118,177,141,178,140],"WebSocket","Canvas","Realtime rooms: chat with SQLite history, an online list, a typing indicator, a shared board with strokes and cursors, anonymous nicknames. WebSocket (RFC 6455) written on the stdlib.",[181,182,183,184],"Own WebSocket layer (RFC 6455) on the stdlib","Slow-client disconnects and rate limits","Graceful shutdown with close code 1001","Load test: 360 connections in 6 rooms","cd realtime-rooms && set SEED_DEMO=1&& go run .\u002Fcmd\u002Fserver",46,"\u002Fog\u002Fen\u002Frealtime-rooms.jpg",{"desktop":189,"desktop_sm":190,"mobile":191,"dw":192,"dh":193,"mw":194,"mh":195},"\u002Fshots\u002Frealtime-rooms-desktop.webp","\u002Fshots\u002Frealtime-rooms-desktop-sm.webp","\u002Fshots\u002Frealtime-rooms-mobile.webp",1280,800,390,844,{"about":197,"features":200,"run":207,"notes":211},[198,199],"Realtime rooms: a chat with history in SQLite, an online list, a typing indicator and a shared board where every participant's strokes and cursors are visible to everyone at once. No sign-up; nicknames are anonymous.","The WebSocket protocol (RFC 6455) is written on the standard library: handshake, frames, masking, fragmentation, ping\u002Fpong and close codes. The only dependency is pure-Go SQLite without CGO; the vanilla JS and Canvas interface is embedded in the binary.",[201,202,203,204,205,206],"Room hub: two goroutines per connection, broadcasting through a bounded queue; a slow client is disconnected and does not hold the others back","Per-connection rate limits (a token bucket for chat and an overall one); ephemeral messages (cursors, typing) are dropped under load","Chat history in SQLite: a message is broadcast only after it is saved, the last 50 are sent on join and older ones load page by page","A shared Canvas board: strokes in normalised coordinates, other people's cursors with nicknames, and the current state is sent to late joiners","Graceful shutdown: every connection gets close code 1001; the browser reconnects with exponential backoff and jitter","Protocol and hub tests, a load test with 360 connections in 6 rooms; Docker and GitHub Actions",[208,209,210],"git clone \u003Crepository on request> realtime-rooms","cd realtime-rooms","SEED_DEMO=1 go run .\u002Fcmd\u002Fserver   # http:\u002F\u002Flocalhost:8086, room \u002Fr\u002Fdemo",[212,213,214],"A single process with the hub in memory, so there is no horizontal scaling. The board lives in memory and does not survive a server restart (the chat is saved in SQLite).","No TLS or authentication, and nicknames are anonymous and unprotected. There is no permessage-deflate; the Autobahn Test Suite was not run, and correctness is covered by my own tests.","The bot in the demo room answers with canned phrases and is marked as a bot: it is neither a person nor an AI.",{"slug":216,"title":217},"job-queue","Conveyor: job queue",{"slug":219,"title":220},"api-gateway","Sluice: API gateway",true,[223,228,232,237],{"slug":224,"lang":5,"title":225,"date":226,"summary":227,"project":135,"minutes":60},"double-booking","Double booking: a transaction plus a partial UNIQUE index","2026-10-20","How booking-slots protects against two clients booking the same time at once, and how that protection is tested.",{"slug":229,"lang":5,"title":230,"date":226,"summary":231,"project":216,"minutes":150},"lease-and-fencing","Lease and fencing: how a queue neither loses a job nor lets a zombie finish it twice","A worker can crash, stall, or wake up after its job was taken by someone else. How the lease and the lease token in job-queue deal with that on SQLite.",{"slug":233,"lang":5,"title":234,"date":226,"summary":235,"project":236,"minutes":150},"p95-nearest-rank","p95 in an uptime monitor: the nearest-rank method and what it does not hide","How uptime-monitor computes p50\u002Fp95 latency and uptime, why the nearest-rank method was chosen, and where those numbers can mislead.","uptime-monitor",{"slug":238,"lang":5,"title":239,"date":226,"summary":240,"project":172,"minutes":150},"websocket-from-scratch","WebSocket on the standard library: what really happens under new WebSocket()","Why realtime-rooms has its own RFC 6455 layer, which protocol violations it checks, and why a library is still the better choice for production.",1793297827523]