[{"data":1,"prerenderedAt":240},["ShallowReactive",2],{"api:\u002Fapi\u002Fconfig:en":3,"api:\u002Fapi\u002Fprofile:":8,"api:\u002Fapi\u002Fcategories:en":19,"api:\u002Fapi\u002Fprojects\u002Fjob-queue: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":180,"highlights":181,"run":186,"hue":187,"og":188,"shots":189,"case":197,"case_lang":5,"prev":215,"next":218,"has_eng":221},"job-queue","Conveyor: job queue","infra","https:\u002F\u002Fjob-queue.ewsir.space",[118,141,177,178,179,140],"REST API","SSE","Prometheus","A background job queue: priorities, delayed and cron jobs, retries with backoff and jitter, dead-letter, idempotency keys, leases with fencing, Prometheus metrics.",[182,183,184,185],"At-least-once with lease and fencing","Retries with backoff and jitter + dead-letter","Custom cron parser","Prometheus metrics and graceful shutdown","cd job-queue && set API_TOKEN=demo&& set SEED_DEMO=1&& go run .\u002Fcmd\u002Fserver",249,"\u002Fog\u002Fen\u002Fjob-queue.jpg",{"desktop":190,"desktop_sm":191,"mobile":192,"dw":193,"dh":194,"mw":195,"mh":196},"\u002Fshots\u002Fjob-queue-desktop.webp","\u002Fshots\u002Fjob-queue-desktop-sm.webp","\u002Fshots\u002Fjob-queue-mobile.webp",1280,800,390,844,{"about":198,"features":201,"run":208,"notes":212},[199,200],"Conveyor is a background job queue: persistent in SQLite, with a worker pool, priorities, delayed and cron jobs, retries with exponential backoff and jitter, and a dead-letter queue with manual retry.","It guarantees at-least-once delivery: a job is held under a lease with a heartbeat, and the lease token (fencing) stops a zombie worker from corrupting the result. It also has Prometheus metrics and a live SSE dashboard.",[202,203,204,205,206,207],"Priorities 0-9, delayed start, and a custom cron expression parser (lists, ranges, steps, @daily and so on)","Idempotency keys: enqueueing again returns the existing job, even when two requests race","Atomic job claiming with a single UPDATE ... RETURNING, so no double execution even from two processes","Lease and reaper for crashed workers; graceful shutdown returns unfinished jobs to the queue","REST API, \u002Fmetrics in Prometheus format, a dashboard","Tests with -race for concurrent claiming, lease, backoff, cron and shutdown; Docker",[209,210,211],"git clone \u003Crepository on request> job-queue","cd job-queue","API_TOKEN=demo SEED_DEMO=1 go run .\u002Fcmd\u002Fserver   # http:\u002F\u002Flocalhost:8085",[213,214],"The demo handlers (email.send, image.resize, webhook.call) only simulate work: nothing is sent.","A single SQLite file, so it scales only within one machine. At-least-once only, so handlers must be idempotent; there are no job chains and no per-queue rate limits. Metric counters reset on restart.",{"slug":216,"title":217},"uptime-monitor","Pulse: uptime monitor",{"slug":219,"title":220},"realtime-rooms","Rooms: realtime chat and board",true,[223,228,232,236],{"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":172,"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":216,"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.",{"slug":237,"lang":5,"title":238,"date":226,"summary":239,"project":219,"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.",1793297827515]