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For Startups
Playbooks, decision frameworks, and case studies written for startups.
Enforce Row-Level Tenancy in Postgres Without a Middleware Tax
A hands-on tutorial for backend engineers who want tenant isolation enforced at the database layer, not in application WHERE clauses. Includes the set_config trick that avoids the RLS performance penalty most teams blame on the feature itself.
Top AI Product Studios in the US for Seed-Stage Startups
A practical vendor landscape for seed-stage US founders choosing an AI product studio. Real categories, honest tradeoffs, and what to demand on IP, docs, and handoff.
Rate-Limit a Multi-Tenant API Without Punishing Good Tenants
One free-tier tenant shouldn't be able to spike your p99 and take down enterprise customers sharing the same limiter. Here's a runnable per-tenant sliding window in Redis, with the sorted-set logic that makes boundary bursts impossible.
Monolith vs. Microservices: A Decision Framework for Growing SaaS
Deployment pain and merge conflicts feel like a signal to split your monolith. Often they are a signal to fix your monolith. Here is how to tell the difference.
How GimBooks Scaled GST Filing to 3M Users Without Breaking
A deep look at the architectural decisions that let GimBooks scale GST filing to millions of Indian SMB users. The real bottleneck was not compute — it was stateful rule evaluation across a financial year.
Retry Failed Jobs in Postgres Without a Queue Server
You don't need Redis or Sidekiq to stop losing background jobs. Postgres 9.5+ ships with SKIP LOCKED, which is enough to build a concurrent job queue with retries, exponential backoff, and a dead-letter state in about 100 lines of SQL and Python.
Multi-Tenant Data Isolation: The Cheatsheet
A dense reference for SaaS CTOs who need to answer enterprise security questionnaires about how tenant data is isolated. Covers row-level security in Postgres, schema-per-tenant, database-per-tenant, attack surfaces, and the migration-velocity tradeoffs nobody warns you about.
Supabase vs. Firebase vs. PlanetScale: Pick the Right BaaS
Choosing between Supabase, Firebase, and PlanetScale isn't about features or DX — it's about where your relational complexity will live once multi-tenancy and row-level security show up. Here's how to decide before you re-platform.
Idempotent Webhook Handlers: Stop Processing Events Twice
If your Stripe or Razorpay webhook occasionally double-credits a wallet or creates duplicate orders, the fix isn't deduplicating HTTP requests — it's making the database write itself a no-op on replay. Here's a runnable tutorial that shows how to do it correctly under concurrent retries.
How Vahak Onboarded 800K Trucks Without a Sales Team
Vahak's supply-side unlock wasn't a slicker signup flow — it was rebuilding trust and verification to run asynchronously, so a truck owner could transact before a single document was fully verified. Here's the architectural call and what generalizes.
GST Compliance Cheatsheet for SaaS Products Serving Indian SMBs
A reference sheet for SaaS founders whose billing engine treats GST as one flat tax field. Covers the four axes GST branches on — and the invoice fields that make or break your customers' input tax credit claims.
Rate-Limit LLM API Calls Per Tenant Without Dropping Requests
One noisy tenant is eating your shared OpenAI quota and 429-ing everyone else. Here is a runnable per-tenant token-bucket limiter in Redis that meters by estimated tokens and queues excess requests instead of dropping them.