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Saas for Businesses
Playbooks and case studies covering saas for businesses.
What Is RAG? Stop Letting Your AI Hallucinate Your Own Data
Your AI assistant keeps confidently inventing answers about your own product because a system prompt is not a database. Here's what RAG actually does, where it breaks, and when to use it instead of fine-tuning.
Celery vs. Temporal vs. BullMQ: Pick the Right Job Queue
Most job queue comparisons benchmark throughput and miss the dimension that actually breaks in production: what happens to a multi-step workflow when a worker dies mid-execution. Here's how Celery, Temporal, and BullMQ actually differ where it matters.
Monolith vs. Microservices: Pick the Right Cut Point
Most teams debating microservices actually have a module-boundary problem, not an architecture problem. Here's a decision framework to tell the difference before you commit six-plus months of engineering capacity to a migration you may not need.
LLM Prompt Versioning Cheatsheet: Stop Shipping Blind
A dense reference for teams shipping LLM features to production: how to version prompts, run regression tests, roll back safely, and treat prompt edits as the schema migrations they actually are.
Temporal Tables vs. Event Sourcing: Pick the Right Audit Trail
Temporal tables and event sourcing look interchangeable until an auditor or a disputing customer forces you to prove something specific. The right pick depends less on scale than on which question your business actually needs to answer.
How to Migrate a Live Multi-Tenant SaaS DB With Zero Downtime
A practical playbook for migrating a live multi-tenant Postgres database without a maintenance window. Includes the dual-write pitfall that quietly corrupts tenant data — and how a per-tenant write-version flag prevents it.
What Is Event Sourcing? Stop Losing the Why Behind Your Data
Your database records what is true now, not what happened. Event sourcing inverts that model — making the sequence of events the source of truth, so the audit trail becomes structural instead of optional.
How to Sunset a Legacy Feature Without Breaking Power Users
Most feature deprecations fail because usage analytics tell you who calls a feature, not what job it's doing. Here's a playbook for sunsetting legacy features when a vocal minority of power users has built workflows you've never seen.
What Is RAG? Stop Letting Your LLM Hallucinate Your Own Data
Your chatbot invents answers about your own product because the LLM has never seen your docs. Here's what RAG actually does, why retrieval quality matters more than model choice, and when fine-tuning is the wrong fix.
Microservices vs. Modular Monolith: Pick the Right Architecture
Your monolith is slow to deploy and teams are stepping on each other. Before you split into microservices, here's how to tell if your real problem is coupling, pipeline design, or actual scale — and which architecture solves which.
AI Feature Flags Cheatsheet: What to Gate, Rollback, and Monitor
Standard feature flags gate users. AI features need a second layer that gates model behavior — version, prompt, embedding schema, output quality. Here's the reference cheatsheet.
Celery vs. Temporal: Pick the Right Workflow Engine for AI Jobs
Celery loses in-flight state when a worker dies mid-chain — and no amount of logging fixes that. Here's an honest head-to-head with Temporal for teams running multi-step LLM and document-parsing pipelines in production.