Sahil's Playbook

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Latest: 05 Feb 2026

Redis in Modern Systems

Redis is one of the most influential building blocks in modern system architecture. When used intentionally, it simplifies coordination, scaling, and shared state across services. This article explores how Redis works under the hood and how to design systems that take full advantage of it.

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Make the Consequence Real

Senior engineering leadership breaks when clarity, dashboards, and alignment are treated as sufficient. At scale, real change comes from sustained attention and consequences that feel uncomfortable but force systems to learn.

An Ode to Stack Overflow: The Community That Taught a Generation to Think

Stack Overflow was not just a website. It was a place that taught us how to think in public. How to be precise. How to be wrong, and then better. We waited hours, sometimes days, for answers from strangers who cared enough to help. And when the answer came, it belonged to everyone.

How Cybersecurity Will Evolve in 2026

Cybersecurity has collapsed under its own assumptions lately. Attackers scaled faster than humans could react, identity became the weakest link, and most defenses failed exactly when clarity mattered most. In 2026, security stops being about prevention and starts being about surviving failure.

Software Is Not Flexible. It Hardens as It Grows

Software has a reputation for being forgiving, something that is easy to change, easy to fix, and easy to reshape once we finally understand the problem we were supposed to be solving. That reputation is not entirely wrong, but it only holds at very small scales and only for a short while.

Best AI Tools for Product Managers in 2026

Discover the best AI tools for product managers in 2026, from Bolt and Lovable for rapid prototyping to Notion AI, Gamma, Productboard, and more.

Embedding Flutter Modules into Native Android and iOS Apps

We used Flutter Add-to-App to ship a side feature inside an existing Android and iOS app, saving weeks of duplicated work while keeping performance and user experience intact.

MongoDB Data Modeling: How to Design Schemas for Real-World Applications

A fast MongoDB system comes from modeling data around how your application reads and writes it. This guide breaks down how to structure documents, when to embed or reference, the patterns used in real production systems, and the indexing strategies that keep performance predictable as data grows.

Your Career Isn’t a Ladder, It’s a Metamorphosis

Careers don’t move upward in straight lines. They reshape you through cycles of curiosity, chaos, stillness, and clarity. You aren’t climbing. You’re transforming.

2026 Prediction: Foundation Models Are Becoming a Black Hole for AI Startups

Foundation models are no longer just platforms for AI startups. They are becoming gravity wells that pull entire product categories inward.. In 2026, AI startups built too close will be swallowed. The survivors will look nothing like “AI companies.”