Category: Engineering
Practical thinking on engineering, performance, SEO and product — from the DELLIUX team.
In-App Search: Postgres, Algolia or Elasticsearch?
A practical decision framework for founders choosing between Postgres full-text search, managed services like Algolia and Typesense, and self-hosted Elasticsearch.
8 min read
API Rate Limiting Best Practices for SaaS Founders
A founder's guide to designing API rate limits that protect your infrastructure, keep usage fair, and align with how you actually charge customers.
8 min read
Transactional Email Deliverability: A Founder’s Guide
A practical, engineering-first guide to keeping password resets, receipts and other transactional email out of the spam folder.
7 min read
Background Job Queues: When Startups Actually Need One
Slow requests, flaky third-party calls and dropped emails usually mean it's time for a background job queue. Here's when to add one, how it works, and what tends to go wrong.
8 min read
Webhook Reliability: A Practical Guide for SaaS Founders
Webhooks look simple until duplicates, retries and out-of-order events start corrupting your data. Here's how to build ones that hold up in production.
8 min read
SaaS Payment Integration: A Founder’s Implementation Guide
A founder's guide to integrating payments into a SaaS product, covering Stripe vs merchant-of-record platforms, webhook architecture, PCI DSS compliance and subscription billing pitfalls.
8 min read
Data Protection by Design: A Practical Engineering Guide
Data protection by design isn't paperwork bolted on before launch - it's an architecture decision. Here's how to build GDPR compliant software from the first sprint.
8 min read
Monolith vs Microservices: What Startups Should Build First
Most startups get talked into microservices too early. Here's why a well-structured modular monolith is usually the right starting point, and the concrete signals that tell you it's time to split.
7 min read
Observability for Startups: What to Monitor Before You Scale
What early-stage teams actually need to monitor before scaling, and why a lean observability stack beats an enterprise platform bought too soon.
7 min read
A Web App Security Checklist Every Founder Should Demand
A practical, non-technical security checklist for founders commissioning a web app, built around the new OWASP Top 10:2025 and what to actually demand from a development team.
10 min read