Tags — Oak Oliver Engineering

architecture 14 articles

I Built Two Stripe Integrations in the Same Codebase. They Share Almost Zero Billing Code.Feb 9, 2026
We Run Cron Jobs Inside the Bun Server Process (And You Should Too)Feb 7, 2026
Stop Deducting Credits Immediately — Your Billing System Is a Ticking Time BombFeb 6, 2026
40 Languages, 400KB Bundle — Why I Refuse to Ship Translations in JavaScriptFeb 4, 2026
Your SSE Connections Are Lying to You — Here's What Happens When Users ReconnectJan 31, 2026
I Made Billing Invisible. Now My Developers Ship Paid Features Without Writing a Single Line of Payment Code.Jan 30, 2026
Our Mentoring Platform Was Bleeding $17 Per Overrun Session. Then I Built a Timer That Kills Zoom Calls.Jan 29, 2026
HMAC-Signed Vibe-to-Vibe Calls: How We Stopped Micro-Apps from Impersonating Each OtherJan 27, 2026
Layered Authorization in Elysia.js: Why Your Middleware Is Doing Too MuchJan 25, 2026
Your SaaS Handles Money With a Balance Column. That's Why Your Numbers Don't Add Up at 2 AM.Jan 24, 2026
Every User Gets Their Own Database. The Billing Architecture That Shouldn't Work — But Outperforms Everything.Jan 22, 2026
Our Entire SaaS Is One 13,870-Line File. We Tried Splitting It. We Put It Back.Jan 20, 2026
We Use Subdomains as Security Boundaries. No Kubernetes. No Containers. Just Directories.Jan 19, 2026
We Built a 340-Line Static Site Generator That Made Next.js Irrelevant. It Renders 480 Pages in 650ms.Jan 17, 2026

bun 9 articles

performance 7 articles

security 5 articles

vibe 5 articles

elysia 4 articles

payments 4 articles

fintech 4 articles

billing 4 articles

react 4 articles

docker 3 articles

ssg 3 articles

sse 3 articles

lead-generation 2 articles

openstreetmap 2 articles

data-engineering 2 articles

testing 2 articles

devops 2 articles

stripe 2 articles

seo 2 articles

i18n 2 articles

real-time 2 articles

middleware 2 articles

sqlite 2 articles

postgresql 2 articles

automation 1 article

I Mined 47,000 Businesses from OpenStreetMap and Scored the Ones That Need a Website: Building an Automated Lead Gen PipelineFeb 15, 2026

puppeteer 1 article

I Mined 47,000 Businesses from OpenStreetMap and Scored the Ones That Need a Website: Building an Automated Lead Gen PipelineFeb 15, 2026

ai 1 article

Stop Exposing Your API Keys: How I Built a Five-Layer AI Proxy That Lets Users Call LLMs Without the Security NightmareFeb 14, 2026

llm 1 article

Stop Exposing Your API Keys: How I Built a Five-Layer AI Proxy That Lets Users Call LLMs Without the Security NightmareFeb 14, 2026

api-design 1 article

Stop Exposing Your API Keys: How I Built a Five-Layer AI Proxy That Lets Users Call LLMs Without the Security NightmareFeb 14, 2026

bdd 1 article

BDD Is Not Dead: How Gherkin Scenarios Turned My Micro-SaaS Test Suite Into a Living ContractFeb 13, 2026

playwright 1 article

BDD Is Not Dead: How Gherkin Scenarios Turned My Micro-SaaS Test Suite Into a Living ContractFeb 13, 2026

cucumber 1 article

BDD Is Not Dead: How Gherkin Scenarios Turned My Micro-SaaS Test Suite Into a Living ContractFeb 13, 2026

e2e 1 article

BDD Is Not Dead: How Gherkin Scenarios Turned My Micro-SaaS Test Suite Into a Living ContractFeb 13, 2026

integration-tests 1 article

14 Test Files, Zero Flaky Tests: How I Test Every API Domain in Elysia.js Without Jest or VitestFeb 12, 2026

quality 1 article

14 Test Files, Zero Flaky Tests: How I Test Every API Domain in Elysia.js Without Jest or VitestFeb 12, 2026

containers 1 article

From 1.2GB to 89MB: The Docker Multi-Stage Build That Changed How I Ship Bun ApplicationsFeb 11, 2026

optimization 1 article

From 1.2GB to 89MB: The Docker Multi-Stage Build That Changed How I Ship Bun ApplicationsFeb 11, 2026

infrastructure 1 article

I Run 6 Production Services on a Single €30/Month Server. Here's Why I Don't Need Kubernetes.Feb 10, 2026

hetzner 1 article

I Run 6 Production Services on a Single €30/Month Server. Here's Why I Don't Need Kubernetes.Feb 10, 2026

coolify 1 article

I Run 6 Production Services on a Single €30/Month Server. Here's Why I Don't Need Kubernetes.Feb 10, 2026

saas 1 article

I Built Two Stripe Integrations in the Same Codebase. They Share Almost Zero Billing Code.Feb 9, 2026

marketplace 1 article

85/15 Almost Killed My Marketplace — The Hidden Economics of Two-Tier BillingFeb 8, 2026

economics 1 article

85/15 Almost Killed My Marketplace — The Hidden Economics of Two-Tier BillingFeb 8, 2026

cron 1 article

We Run Cron Jobs Inside the Bun Server Process (And You Should Too)Feb 7, 2026

scheduling 1 article

We Run Cron Jobs Inside the Bun Server Process (And You Should Too)Feb 7, 2026

email 1 article

We Run Cron Jobs Inside the Bun Server Process (And You Should Too)Feb 7, 2026

credits 1 article

Stop Deducting Credits Immediately — Your Billing System Is a Ticking Time BombFeb 6, 2026

patterns 1 article

Stop Deducting Credits Immediately — Your Billing System Is a Ticking Time BombFeb 6, 2026

og-images 1 article

480 Unique OG Images at Build Time: How We Made Every Page Shareable with Satori and resvgFeb 5, 2026

satori 1 article

480 Unique OG Images at Build Time: How We Made Every Page Shareable with Satori and resvgFeb 5, 2026

social-media 1 article

480 Unique OG Images at Build Time: How We Made Every Page Shareable with Satori and resvgFeb 5, 2026

caching 1 article

40 Languages, 400KB Bundle — Why I Refuse to Ship Translations in JavaScriptFeb 4, 2026

developer-experience 1 article

We Built Our Own Hot Reload Because Bun Doesn't Have One (And It's Better)Feb 3, 2026

hot-reload 1 article

We Built Our Own Hot Reload Because Bun Doesn't Have One (And It's Better)Feb 3, 2026

build-tools 1 article

We Built Our Own Hot Reload Because Bun Doesn't Have One (And It's Better)Feb 3, 2026

development 1 article

We Built Our Own Hot Reload Because Bun Doesn't Have One (And It's Better)Feb 3, 2026

hreflang 1 article

480 Pages, 40 Locales, Zero Frameworks — How I Beat Next.js at International SEOFeb 2, 2026

localization 1 article

480 Pages, 40 Locales, Zero Frameworks — How I Beat Next.js at International SEOFeb 2, 2026

react-query 1 article

I Killed the Loading Spinner — Without Next.js, Without SSR, Without Any FrameworkFeb 1, 2026

hydration 1 article

I Killed the Loading Spinner — Without Next.js, Without SSR, Without Any FrameworkFeb 1, 2026

event-sourcing 1 article

Your SSE Connections Are Lying to You — Here's What Happens When Users ReconnectJan 31, 2026

reliability 1 article

Your SSE Connections Are Lying to You — Here's What Happens When Users ReconnectJan 31, 2026

mentoring 1 article

Our Mentoring Platform Was Bleeding $17 Per Overrun Session. Then I Built a Timer That Kills Zoom Calls.Jan 29, 2026

authentication 1 article

I Deleted Every Password From My Database. Here's Why My Users Are Safer Than Yours.Jan 28, 2026

oauth 1 article

I Deleted Every Password From My Database. Here's Why My Users Are Safer Than Yours.Jan 28, 2026

magic-links 1 article

I Deleted Every Password From My Database. Here's Why My Users Are Safer Than Yours.Jan 28, 2026

hmac 1 article

HMAC-Signed Vibe-to-Vibe Calls: How We Stopped Micro-Apps from Impersonating Each OtherJan 27, 2026

api 1 article

HMAC-Signed Vibe-to-Vibe Calls: How We Stopped Micro-Apps from Impersonating Each OtherJan 27, 2026

authorization 1 article

Layered Authorization in Elysia.js: Why Your Middleware Is Doing Too MuchJan 25, 2026

accounting 1 article

Your SaaS Handles Money With a Balance Column. That's Why Your Numbers Don't Add Up at 2 AM.Jan 24, 2026

prisma 1 article

I Deleted a 200MB Rust Binary From My Docker Image. My Deploys Have Never Been the Same.Jan 23, 2026

database 1 article

Every User Gets Their Own Database. The Billing Architecture That Shouldn't Work — But Outperforms Everything.Jan 22, 2026

code-splitting 1 article

Your Users Download 1.5MB of JavaScript to See a Landing Page. We Fixed It With an If Statement.Jan 21, 2026

spa 1 article

Your Users Download 1.5MB of JavaScript to See a Landing Page. We Fixed It With an If Statement.Jan 21, 2026

frontend 1 article

Your Users Download 1.5MB of JavaScript to See a Landing Page. We Fixed It With an If Statement.Jan 21, 2026

monolith 1 article

Our Entire SaaS Is One 13,870-Line File. We Tried Splitting It. We Put It Back.Jan 20, 2026

microservices 1 article

Our Entire SaaS Is One 13,870-Line File. We Tried Splitting It. We Put It Back.Jan 20, 2026

trade-offs 1 article

Our Entire SaaS Is One 13,870-Line File. We Tried Splitting It. We Put It Back.Jan 20, 2026

multi-tenancy 1 article

We Use Subdomains as Security Boundaries. No Kubernetes. No Containers. Just Directories.Jan 19, 2026

isolation 1 article

We Use Subdomains as Security Boundaries. No Kubernetes. No Containers. Just Directories.Jan 19, 2026

nextjs 1 article

We Built a 340-Line Static Site Generator That Made Next.js Irrelevant. It Renders 480 Pages in 650ms.Jan 17, 2026

nodejs 1 article

We Replaced Node.js With Bun Across Every Production Service. Here's What Nobody Tells You.Jan 15, 2026

runtime 1 article

We Replaced Node.js With Bun Across Every Production Service. Here's What Nobody Tells You.Jan 15, 2026

production 1 article

We Replaced Node.js With Bun Across Every Production Service. Here's What Nobody Tells You.Jan 15, 2026

migration 1 article

We Replaced Node.js With Bun Across Every Production Service. Here's What Nobody Tells You.Jan 15, 2026