Notes on building things — AI-accelerated development, Next.js, Shopify, the MERN stack and React Native.https://pavelriajul.com/enhttps://pavelriajul.com/blog/declining-projects/https://pavelriajul.com/blog/declining-projects/Every bad project was visible in the first conversation. The signals, what they cost when ignored, and how to say no without burning anything.Wed, 05 Aug 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/estimation-lessons/https://pavelriajul.com/blog/estimation-lessons/You are not bad at estimating the work. You are bad at remembering everything that is not the work — and that is the recoverable part.Sun, 02 Aug 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/freelancing-remote-timezones/https://pavelriajul.com/blog/freelancing-remote-timezones/A large time difference is an advantage if the work is structured for it and a slow disaster if it is not. What actually has to change.Fri, 31 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/handover-documentation/https://pavelriajul.com/blog/handover-documentation/Most project documentation describes what the code does, which the code already says. What is missing is why, and who has the passwords.Tue, 28 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/client-objections/https://pavelriajul.com/blog/client-objections/"It is too expensive" is rarely about the price. The eight objections that recur, what is underneath each one, and how to answer honestly.Sun, 26 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/choosing-a-stack-once/https://pavelriajul.com/blog/choosing-a-stack-once/Every project that starts with a technology debate loses a week. Four templates decided in advance, and the narrow cases where you deviate.Thu, 23 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/ai-accelerated-positioning/https://pavelriajul.com/blog/ai-accelerated-positioning/One says you deliver faster. The other says you sell AI. They attract different clients, and only one of them survives the tooling changing again.Tue, 21 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/pricing-ai-accelerated-work/https://pavelriajul.com/blog/pricing-ai-accelerated-work/If you bill by the hour and the hours halve, you have given yourself a pay cut for getting better. What to charge for instead.Sat, 18 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/development-process/https://pavelriajul.com/blog/development-process/Six steps from first message to production. What each one is actually for, and why most process overhead solves problems small teams do not have.Thu, 16 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/project-scoping/https://pavelriajul.com/blog/project-scoping/Most projects that go wrong were mis-scoped, not mis-built. The questions that surface the real work, and what to do with the answers.Mon, 13 Jul 2026 00:00:00 GMTCareerhello@riajulislam.devhttps://pavelriajul.com/blog/react-native-deep-linking/https://pavelriajul.com/blog/react-native-deep-linking/A link that opens the right screen when the app is already running, and the home screen when it is not, is the standard half-finished implementation.Sat, 11 Jul 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/mobile-token-storage/https://pavelriajul.com/blog/mobile-token-storage/AsyncStorage is a plain file on disk. Keychain and Keystore exist for exactly this, and the difference matters more than most teams assume.Wed, 08 Jul 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/app-store-rejections/https://pavelriajul.com/blog/app-store-rejections/Most first submissions are rejected, and most rejections are for the same handful of things. Here they are, with what to do before you submit.Mon, 06 Jul 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/mobile-app-retention/https://pavelriajul.com/blog/mobile-app-retention/Most apps lose the majority of users within a week, and most of that happens in the first session. What actually causes it, and what fixes it.Fri, 03 Jul 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/shared-api-web-mobile/https://pavelriajul.com/blog/shared-api-web-mobile/Share the contract, the types and the validation. Share the interface layer and you get something slightly wrong on both platforms.Wed, 01 Jul 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/push-notifications-reliability/https://pavelriajul.com/blog/push-notifications-reliability/Every layer between your server and a phone can drop a notification silently. Design for that, and ask for the permission at the right moment.Sun, 28 Jun 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/react-native-gesture-performance/https://pavelriajul.com/blog/react-native-gesture-performance/A drag that lags by two frames feels broken in a way users cannot name. Keeping animation off the JavaScript thread is the whole technique.Fri, 26 Jun 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/expo-in-production/https://pavelriajul.com/blog/expo-in-production/Expo is no longer the beginner option you outgrow. Here is what it actually removes from a React Native project, and where it still bites.Tue, 23 Jun 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/app-vs-pwa/https://pavelriajul.com/blog/app-vs-pwa/Most people asking for an app need a fast mobile site. Some genuinely need the store. The question that separates them is not technical.Sun, 21 Jun 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/react-native-offline-first/https://pavelriajul.com/blog/react-native-offline-first/An app that needs a connection to show data the user already owns is broken on a train. Local-first storage, sync, and the conflicts nobody plans for.Thu, 18 Jun 2026 00:00:00 GMTMobilehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-subscriptions/https://pavelriajul.com/blog/shopify-subscriptions/Recurring revenue is the easiest thing to sell internally and the hardest to run. The failure modes are operational, not technical — here they are.Tue, 16 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-metafields-performance/https://pavelriajul.com/blog/shopify-metafields-performance/Custom product data is how a Shopify store stops looking generic. It is also how a collection page ends up making four hundred lookups per render.Sat, 13 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/cro-experiment-results/https://pavelriajul.com/blog/cro-experiment-results/The test finished and the number is green. Here is what to check before you ship it, and the ways a result can be real and still not repeat.Thu, 11 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-checkout-customization/https://pavelriajul.com/blog/shopify-checkout-customization/Less than you want and more than you think. What is configurable, what needs Plus, what needs an extension, and what you should not touch at all.Mon, 08 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/figma-to-shopify/https://pavelriajul.com/blog/figma-to-shopify/A design that looks perfect in Figma and wrong in the theme editor failed at handoff, not at build. What the file needs before anyone writes Liquid.Sat, 06 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-product-schema/https://pavelriajul.com/blog/shopify-product-schema/Rich results need structured data that matches the page exactly. Most Shopify themes emit something close enough to look fine and wrong enough to fail.Wed, 03 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/product-page-elements/https://pavelriajul.com/blog/product-page-elements/The page that decides the sale, element by element — in the order a buyer needs them, and with the things that only add weight left out.Mon, 01 Jun 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/posthog-ab-testing-shopify/https://pavelriajul.com/blog/posthog-ab-testing-shopify/Feature flags, experiments and session recordings on a Liquid theme — without a dedicated testing tool, and without the flicker that ruins the result.Fri, 29 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/cro-process-loop/https://pavelriajul.com/blog/cro-process-loop/Measure, hypothesise, build, test, decide, repeat. The loop is simple and almost every team breaks it in the same three places.Wed, 27 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/custom-vs-premium-shopify-theme/https://pavelriajul.com/blog/custom-vs-premium-shopify-theme/A £300 theme covers most stores completely. A custom build is right for a narrow set of them. The deciding factor is usually not what people think.Sun, 24 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-performance-optimization/https://pavelriajul.com/blog/shopify-performance-optimization/Most slow Shopify stores are slow for four reasons, none of them Shopify. A day of the right work usually beats a quarter of rebuilding.Fri, 22 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/ecommerce-conversion-leaks/https://pavelriajul.com/blog/ecommerce-conversion-leaks/Most stores lose more revenue between the product page and the cart than anywhere else — and fix the homepage instead. Where to look, in order.Tue, 19 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/shopify-hydrogen-worth-it/https://pavelriajul.com/blog/shopify-hydrogen-worth-it/Going headless cut one store’s load time by 58% and lifted mobile conversion 24%. It also cost more to build and more to run. When that trade makes sense.Sun, 17 May 2026 00:00:00 GMTE-commercehello@riajulislam.devhttps://pavelriajul.com/blog/headless-chrome-screenshots/https://pavelriajul.com/blog/headless-chrome-screenshots/Generating per-route social cards from real HTML, plus the screenshot helper I use to verify layout work — and the colour bug that fools both.Thu, 14 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/prefetch-on-hover/https://pavelriajul.com/blog/prefetch-on-hover/A pointer arrives at a link about 200ms before the click. That gap is enough to load the next page — if you spend it carefully and not on everything.Tue, 12 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/lazy-load-heavy-libraries/https://pavelriajul.com/blog/lazy-load-heavy-libraries/A PDF generator, a chart library and an editor in your main bundle serve a fraction of visits. How to move them behind the click that needs them.Sat, 09 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/third-party-script-cost/https://pavelriajul.com/blog/third-party-script-cost/A tag manager, a chat widget and two analytics scripts can outweigh your entire application. How to measure the damage and what to do about each one.Thu, 07 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/field-vs-lab-data/https://pavelriajul.com/blog/field-vs-lab-data/Lighthouse says 98 and Search Console says the page is failing. Both are right. Here is what each measurement is for and which one decides.Mon, 04 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/image-optimization-strategy/https://pavelriajul.com/blog/image-optimization-strategy/Format, dimensions, the sizes attribute nobody sets, and why build-time optimisation beats an on-demand service for most sites.Sat, 02 May 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/bundle-splitting/https://pavelriajul.com/blog/bundle-splitting/Splitting moves bytes around; it does not remove them. What to split, what to delete instead, and why the shared chunk grows quietly.Wed, 29 Apr 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/cloudflare-pages-vs-vercel/https://pavelriajul.com/blog/cloudflare-pages-vs-vercel/Both serve static files fast. The decision is about runtime, framework fit and what happens when the bill scales — not about which edge is closer.Mon, 27 Apr 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/near-zero-cls/https://pavelriajul.com/blog/near-zero-cls/Every shift is something arriving into space nobody reserved. Aspect ratios, font metrics, and the banner that pushes the page down mid-read.Fri, 24 Apr 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/core-web-vitals-nextjs/https://pavelriajul.com/blog/core-web-vitals-nextjs/LCP is usually one image, INP is usually one handler, and CLS is usually one element with no reserved space. Fixing those beats a rewrite.Wed, 22 Apr 2026 00:00:00 GMTPerformancehello@riajulislam.devhttps://pavelriajul.com/blog/inline-icon-system/https://pavelriajul.com/blog/inline-icon-system/Inline SVG keyed on the class strings a CMS already stores, a missing icon that renders nothing, and the script that stops paths being pasted by hand.Sun, 19 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/scroll-stacking-cards/https://pavelriajul.com/blog/scroll-stacking-cards/A sticky cascade needs more height than a phone has, so the last cards pin above their own resting position and the effect silently runs backwards.Fri, 17 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/toc-shared-heading-ids/https://pavelriajul.com/blog/toc-shared-heading-ids/Two slugifiers agree on most headings and disagree on the ones with punctuation. One function, used by both the renderer and the contents list.Tue, 14 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/dark-mode-tokens/https://pavelriajul.com/blog/dark-mode-tokens/Semantic tokens over literal ones, the two-layer split that makes a second theme a data change, and an honest case for not shipping dark mode at all.Sun, 12 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/accessible-forms/https://pavelriajul.com/blog/accessible-forms/Labels, error announcement, autocomplete and the keyboard a phone shows — the plain HTML most form libraries reimplement badly.Thu, 09 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/mobile-card-density/https://pavelriajul.com/blog/mobile-card-density/Two-up grids on a 375px screen, the CSS that handles an odd card, and why a page 26 screens long is a design problem rather than a content one.Tue, 07 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/portable-text-renderer/https://pavelriajul.com/blog/portable-text-renderer/Portable Text stores each list item as a sibling, so naive rendering gives one list per bullet. That and four other things the format does not tell you.Sat, 04 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/mobile-hero-viewport/https://pavelriajul.com/blog/mobile-hero-viewport/svh, dvh and lvh explained by what breaks, plus the fixed bottom bar that no viewport unit knows about and the shorter lede a phone actually needs.Thu, 02 Apr 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/reusable-design-system/https://pavelriajul.com/blog/reusable-design-system/Tokens, four primitives and a rule about inline styles. What to build, what to skip, and the signs a system has quietly stopped being used.Mon, 30 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/self-host-fonts-inline-icons/https://pavelriajul.com/blog/self-host-fonts-inline-icons/Two render-blocking hops to other people's servers, removed. Self-hosted fonts with the right preload, and icons as inline SVG instead of a webfont.Sat, 28 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/wcag-contrast-audit/https://pavelriajul.com/blog/wcag-contrast-audit/One grey token failed AA across an entire site. How to find that, why the same grey passes on white and fails on a panel, and how to stop it recurring.Wed, 25 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/fluid-spacing-scale/https://pavelriajul.com/blog/fluid-spacing-scale/One clamp per step instead of a media query per component — plus the self-referential custom property that silently flattens a whole stylesheet.Mon, 23 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/prefers-reduced-motion/https://pavelriajul.com/blog/prefers-reduced-motion/The global override that misses half your animations, why animation does not inherit, and how to check a whole site in ten minutes.Fri, 20 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/gsap-lenis-smooth-scroll/https://pavelriajul.com/blog/gsap-lenis-smooth-scroll/Smooth scroll and scroll-triggered animation fight over the same number. Wiring them properly, and the accessibility work that is not optional.Wed, 18 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/astro-islands/https://pavelriajul.com/blog/astro-islands/Which client directive to use and when, the state problem nobody mentions, and why most islands turn out not to need a framework at all.Sun, 15 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/astro-vs-nextjs/https://pavelriajul.com/blog/astro-vs-nextjs/Not a benchmark. The question is whether your pages are documents or an application — and what it costs when you answer it wrong.Fri, 13 Mar 2026 00:00:00 GMTFrontendhello@riajulislam.devhttps://pavelriajul.com/blog/n8n-workflow-automation/https://pavelriajul.com/blog/n8n-workflow-automation/Workflow tools are excellent glue and poor application logic. The line between the two, and how to keep automations from becoming untested production code.Tue, 10 Mar 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/edge-rate-limiting/https://pavelriajul.com/blog/edge-rate-limiting/Why the limit belongs in front of your origin, which algorithm to pick, and the identity question that decides whether it works at all.Sun, 08 Mar 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/render-background-jobs/https://pavelriajul.com/blog/render-background-jobs/Background workers, cron jobs and the free-tier spin-down that quietly stops them — the practical setup for the always-on half of a serverless stack.Thu, 05 Mar 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/background-job-queues/https://pavelriajul.com/blog/background-job-queues/Postgres table, Redis queue or hosted service — and the four properties that decide which one, starting with whether you need a queue at all.Tue, 03 Mar 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/idempotency-keys/https://pavelriajul.com/blog/idempotency-keys/A timeout tells the client nothing about whether the work happened. Idempotency keys are how a retry becomes safe instead of a second order.Sat, 28 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/signed-upload-urls/https://pavelriajul.com/blog/signed-upload-urls/The browser uploads straight to storage and your server never holds the bytes — plus the four checks that stop a signed URL being an open write endpoint.Thu, 26 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/mongodb-schema-indexes/https://pavelriajul.com/blog/mongodb-schema-indexes/Embed or reference, the compound index rule that decides whether a query is fast, and the unbounded array that eventually breaks a document.Mon, 23 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/rest-api-design/https://pavelriajul.com/blog/rest-api-design/Pagination, errors, versioning and partial updates — the four choices that are trivial before launch and permanent afterwards.Sat, 21 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/r2-vs-s3/https://pavelriajul.com/blog/r2-vs-s3/Zero egress fees is the headline. The decision is really about egress volume, ecosystem depth and how much of your architecture assumes AWS is nearby.Wed, 18 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/zero-downtime-migrations/https://pavelriajul.com/blog/zero-downtime-migrations/The expand-and-contract pattern, which ALTER statements take an exclusive lock, and why the dangerous part of a rename is the deploy rather than the SQL.Mon, 16 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/neon-database-branching/https://pavelriajul.com/blog/neon-database-branching/A branch per pull request with production-shaped data, why it makes migration review possible, and the two ways it quietly leaks customer records.Fri, 13 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/transactional-email-deliverability/https://pavelriajul.com/blog/transactional-email-deliverability/SPF, DKIM and DMARC in the order they actually have to be set up, plus the subdomain decision that keeps a marketing blast from killing your login emails.Wed, 11 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/supabase-row-level-security/https://pavelriajul.com/blog/supabase-row-level-security/The policies that actually hold, the service role key that quietly bypasses all of them, and why an unindexed policy turns a fast query into a slow one.Sun, 08 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/stripe-webhooks-idempotency/https://pavelriajul.com/blog/stripe-webhooks-idempotency/Stripe sends the same event twice, out of order, and to an endpoint that timed out. The handler shape that survives all three without granting twice.Fri, 06 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/role-based-auth-nextjs-express/https://pavelriajul.com/blog/role-based-auth-nextjs-express/Where the permission check belongs, why hiding a button is not access control, and the one file that stops roles becoming a nest of if statements.Tue, 03 Feb 2026 00:00:00 GMTBackendhello@riajulislam.devhttps://pavelriajul.com/blog/feature-flags-simple/https://pavelriajul.com/blog/feature-flags-simple/Shipping unfinished work safely with a database table and twenty lines of code, before paying for a flag service.Sun, 01 Feb 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/form-spam-protection/https://pavelriajul.com/blog/form-spam-protection/Stopping bot submissions without making a human prove they are one — honeypots, Turnstile, rate limits and server-side verification.Thu, 29 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/testing-critical-paths/https://pavelriajul.com/blog/testing-critical-paths/Not 100% coverage. The handful of flows where a regression costs real money, and how to cover them cheaply.Tue, 27 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/uptime-vs-error-tracking/https://pavelriajul.com/blog/uptime-vs-error-tracking/They catch different outages. Running only one is how a site stays down all weekend without anyone knowing.Sat, 24 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/discovery-call-questions/https://pavelriajul.com/blog/discovery-call-questions/Thirty minutes, and the questions that decide whether a quote is realistic or fiction.Thu, 22 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/project-handover-checklist/https://pavelriajul.com/blog/project-handover-checklist/The accounts and access that belong in the client’s name from day one, and the handover document that stops the late-night support calls.Mon, 19 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/auth-billing-onboarding-mvp/https://pavelriajul.com/blog/auth-billing-onboarding-mvp/The three systems every product needs and nobody wants to pay for twice — built once, reused on every project.Sat, 17 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/tested-database-backups/https://pavelriajul.com/blog/tested-database-backups/An untested backup is not a backup. The restore drill that takes an hour and the failure it prevents.Wed, 14 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/ci-pipeline-typecheck-tests/https://pavelriajul.com/blog/ci-pipeline-typecheck-tests/A pipeline that catches the class of bug that reaches production most often, in under sixty lines of config.Mon, 12 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/staging-environment/https://pavelriajul.com/blog/staging-environment/What shipping straight to production actually costs, and the twenty minutes of setup that prevents it.Fri, 09 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/multi-tenant-prisma-postgres/https://pavelriajul.com/blog/multi-tenant-prisma-postgres/Shared schema, schema-per-tenant or database-per-tenant — and the middleware that stops a missing where clause leaking another customer’s data.Wed, 07 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/database-design-for-v2/https://pavelriajul.com/blog/database-design-for-v2/The schema decisions that are cheap now and expensive in six months, and how to tell them apart before you commit.Sun, 04 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/type-safe-mern/https://pavelriajul.com/blog/type-safe-mern/One source of truth for your data shapes, so the compiler catches a mismatch between API and UI before a user does.Fri, 02 Jan 2026 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/supabase-vs-neon-clerk/https://pavelriajul.com/blog/supabase-vs-neon-clerk/One vendor for database, auth and storage, or best-of-breed pieces. The single question about your organisation model that settles it.Tue, 30 Dec 2025 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/mvp-development-cost/https://pavelriajul.com/blog/mvp-development-cost/What an MVP actually costs by scope, what drives the number up, and the features that get cut first without hurting the launch.Sun, 28 Dec 2025 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/project-stack-templates/https://pavelriajul.com/blog/project-stack-templates/Landing, web app, B2B multi-tenant or AI app — the three questions that decide which a project gets, and why picking wrong is expensive.Thu, 25 Dec 2025 00:00:00 GMTFull-Stackhello@riajulislam.devhttps://pavelriajul.com/blog/prompt-versioning/https://pavelriajul.com/blog/prompt-versioning/A prompt is code. Storing it in a dashboard means no review, no history, and no way to tell what changed when quality dropped.Tue, 23 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/semantic-search-guide/https://pavelriajul.com/blog/semantic-search-guide/Why keyword search fails on natural questions, what semantic search costs to add to an existing product, and when it is the wrong answer.Sat, 20 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/ai-evaluation-harness/https://pavelriajul.com/blog/ai-evaluation-harness/A test set, a scoring method and a regression check — so a prompt change cannot quietly make your answers worse without anyone noticing.Thu, 18 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/rate-limiting-ai-features/https://pavelriajul.com/blog/rate-limiting-ai-features/Per-user, per-org and global limits for AI endpoints — and why degrading gracefully beats returning an error the user cannot act on.Mon, 15 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/document-extraction-pipeline/https://pavelriajul.com/blog/document-extraction-pipeline/Turning PDFs, scans and inconsistent forms into structured data — with validation, confidence scores and a human review path that makes it trustworthy.Sat, 13 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/provider-agnostic-ai-sdk/https://pavelriajul.com/blog/provider-agnostic-ai-sdk/The adapter layer that let a production app move between Claude, GPT and Groq by changing one file — and the four things it has to normalise.Wed, 10 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/pgvector-semantic-search/https://pavelriajul.com/blog/pgvector-semantic-search/Postgres handles semantic search for most products. When pgvector is enough, how to index it, and where a dedicated vector database earns its cost.Mon, 08 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/streaming-ai-ui/https://pavelriajul.com/blog/streaming-ai-ui/Token streaming that stays smooth: batching updates, avoiding layout shift, and handling a dropped connection mid-answer.Fri, 05 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/ai-cost-logging/https://pavelriajul.com/blog/ai-cost-logging/What to log on every model call, and the query that finds the one user costing more than their whole plan is worth.Wed, 03 Dec 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/ai-booking-system-guide/https://pavelriajul.com/blog/ai-booking-system-guide/A booking assistant that checks real availability and books the slot — and the architecture rule that stops it double-booking your calendar.Sun, 30 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/validating-llm-tool-calls-zod/https://pavelriajul.com/blog/validating-llm-tool-calls-zod/The model will eventually return a malformed tool call. The Zod schema layer that turns that from a corrupted database into a logged retry.Fri, 28 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/ai-is-a-module-not-a-stack/https://pavelriajul.com/blog/ai-is-a-module-not-a-stack/AI-first architectures fall over the moment you need auth, billing or an audit trail. The case for bolting AI onto a boring, well-built application.Tue, 25 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/ai-feature-development-cost/https://pavelriajul.com/blog/ai-feature-development-cost/What an AI chat, search or extraction feature actually costs to build and to run — build fees, token spend, and the infrastructure most quotes leave out.Sun, 23 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/mvp-in-19-days/https://pavelriajul.com/blog/mvp-in-19-days/A real 19-day build of an AI research assistant: what got scoped out, what got generated, and the four things that never get cut no matter the deadline.Thu, 20 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/building-with-ai-workflow/https://pavelriajul.com/blog/building-with-ai-workflow/The honest version of an AI-accelerated workflow: what gets generated, what gets rewritten, and the review discipline that keeps fast from meaning fragile.Tue, 18 Nov 2025 00:00:00 GMTAIhello@riajulislam.devhttps://pavelriajul.com/blog/rag-that-answers/https://pavelriajul.com/blog/rag-that-answers/Most bad AI answers are bad retrieval, not a bad model. The chunking, reranking and citation changes that moved accuracy most on a production assistant.Sat, 15 Nov 2025 00:00:00 GMTAIhello@riajulislam.dev