Books

Go behind the scenes of the AI revolution in this definitive biography of OpenAI CEO Sam Altman. From his days as a restless Stanford dropout to the high-stakes boardroom battles that nearly toppled his empire, discover how one man is architecting the future of human intelligence. It is an essential look at the visionary holding the blueprint for the machines of tomorrow.

Clean, Hexagonal, Onion—one dependency rule, three names. Walk a runnable multi-module SaaS billing service in Scala 3 and ZIO: a pure domain ring, ports and use cases in the middle, PostgreSQL + Flyway + JDBC and a thin HTTP shell on the outside—with full source in the PDF, not truncated snippets. See how ZLayer at the composition root keeps one repository for the whole graph, how webhook idempotency stays on the right side of the boundary, and how munit and zio-test (plus optional Docker) prove the architecture you intend to defend in code review.

CRUD erases the story your system lived through; event sourcing keeps it. Build an account aggregate in Scala 3 and ZIO: past-tense events, a pure applyEvent fold, decide for invariants and idempotency, then wire an append-only PostgreSQL journal, transactions, and a balance projection—and trace one account from HTTP command to read model. When the log must leave the database, follow the same events through transactional outbox, Kafka, and at-least-once consumers without pretending you have magic consistency. For architects and implementers who want decision-grade ES + CQRS, not a toy demo.

No distributed transaction spans your whole business process—so you design steps and compensations instead. In Scala 3 and ZIO, build a full order-placement saga from domain types and service algebras to orchestration and event-driven choreography, with tests that prove compensations fire when things break. Then see what it takes to move the same design toward production: outbox, idempotency, persistence, and how to choose between central coordination and decentralized reactions.

La señal llega antes que la explicación. Y cuando el mundo intenta entenderla, ya es demasiado tarde.

Production is down. Dashboards look “green.” Users are still complaining. What went wrong?Traditional monitoring often shows what the system is doing, but not what users are experiencing.This guide introduces you to two powerful mental models:RED Metrics → What your users feelUSE Metrics → What your system is doingTogether, they give you a complete picture—because symptoms and root causes are not the same .Inside this book, you’ll learn how to:Detect issues before users report themCorrelate latency spikes with infrastructure saturationMove from metrics chaos to meaningful observabilityDesign monitoring for modern distributed systemsIf you’ve ever:Struggled to debug production issuesFelt overwhelmed by too many metricsWanted a structured monitoring approachThis book is your shortcut to thinking like an SRE and system architect.

Situationships upcoming!

One man, two revolutions, and the dangerous ideas that broke the divine right of kings. Experience the searing true story of Thomas Paine, the failed corset-maker who authored the American Revolution and narrowly escaped the French guillotine. From the front lines of the Crisis to a prison cell in Paris, discover the firebrand who proved the pen is mightier than the throne.

Una señal detectada una sola vez. Un registro que no debería existir. El origen nunca pudo confirmarse.

Discover the tactical mind behind the marble myth in this exploration of George Washington’s disciplined rise to power. From the brutal frontier to the invention of the American Presidency, learn how a self-taught surveyor used Stoic restraint to build a nation stone by careful stone. This is the blueprint of a leader who knew exactly when to seize command—and when to give it all back.

From a San Jose Denny’s booth to the apex of a three-trillion-dollar empire, witness the high-stakes gamble that transformed a niche graphics company into the indispensable backbone of the AI revolution. Explore the relentless "thirty-day mentality" of Jensen Huang, a leader whose journey through a Kentucky reform school and the "near-death" of his company forged the silicon engine of modern intelligence. This is the definitive chronicle of the architect who bet everything on the idea that the future of computing would be parallel.

From the red clay hills of Virginia to the "Sage of Monticello," discover the 83-year journey of the man who authored the American identity. This immersive biography explores the brilliant mind and complex contradictions of the philosopher-president known as the "Pen of the Revolution." Witness the evolution of a polymath who designed an empire of liberty.

Learn Polars, the pandas killer for data analysis.

Discover the immigrant orphan who drafted the blueprint for a superpower and the financial architecture of the modern world. The Pen and the Pulse is a deep-dive biography that explores the friction between Alexander Hamilton’s brilliant legal mind and the volatile heart that led him to the cliffs of Weehawken. Step into the relentless mind of the Founding Father who saw the future of America before it even had a name.