[{"data":1,"prerenderedAt":76},["ShallowReactive",2],{"api:\u002Fapi\u002Fconfig:en":3,"api:\u002Fapi\u002Fnotes:en":8,"api:\u002Fapi\u002Fprojects\u002Fkanban-tasks:en":32},{"email":4,"lang":5,"name":6,"role":7},"hello@ewsirdev.example","en","Ewsirdev","Web developer: websites, landing pages and Go services",[9,16,22,27],{"slug":10,"lang":5,"title":11,"date":12,"summary":13,"project":14,"minutes":15},"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.","booking-slots",1,{"slug":17,"lang":5,"title":18,"date":12,"summary":19,"project":20,"minutes":21},"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.","job-queue",2,{"slug":23,"lang":5,"title":24,"date":12,"summary":25,"project":26,"minutes":21},"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":28,"lang":5,"title":29,"date":12,"summary":30,"project":31,"minutes":21},"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.","realtime-rooms",{"slug":33,"title":34,"type":35,"stack":36,"description":40,"highlights":41,"run":46,"hue":47,"og":48,"shots":49,"case":57,"case_lang":5,"next":73},"kanban-tasks","Amber: kanban board","backend",[37,38,39],"Go","SQLite","Docker","A multi-user kanban board: sign-up, boards, columns, drag-and-drop cards. Go + SQLite without CGO, the front end is embedded in the binary.",[42,43,44,45],"PBKDF2 and sessions in an HttpOnly cookie","Per-user data isolation","API tests","Multi-stage Docker","cd kanban-tasks && go run .",344,"\u002Fog\u002Fen\u002Fkanban-tasks.jpg",{"desktop":50,"desktop_sm":51,"mobile":52,"dw":53,"dh":54,"mw":55,"mh":56},"\u002Fshots\u002Fkanban-tasks-desktop.webp","\u002Fshots\u002Fkanban-tasks-desktop-sm.webp","\u002Fshots\u002Fkanban-tasks-mobile.webp",1280,800,390,844,{"about":58,"features":61,"run":67,"notes":71},[59,60],"A multi-user kanban board built as a learning project: sign-up, personal boards, columns, and cards you drag between columns.","The backend is Go (standard library and SQLite without CGO); the front end is plain JavaScript embedded in the binary. One file runs with no dependencies to install.",[62,63,64,65,66],"Sign-up and login by email and password; passwords hashed with PBKDF2-HMAC-SHA256","Sessions in an HttpOnly cookie with SameSite=Lax; Content-Type and same-origin checks","Boards, columns and cards, with cards moving between columns","Each user's data is isolated","REST API with tests, multi-stage Docker build",[68,69,70],"git clone \u003Crepository on request> kanban-tasks","cd kanban-tasks","go run .   # http:\u002F\u002Flocalhost:8081",[72],"A learning example: no password reset, no email verification, no login rate limiting. Do not expose it to the internet without HTTPS and a reverse proxy.",{"slug":74,"title":75},"link-shortener","Short: link shortener",1792697892725]