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Posts by Miguel Ángel Pastor Olivar

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Design and Implementation of DuckDB Internals DuckDB is an in-process SQL database management system focused on analytical query processing. It is designed to be easy to install and easy to use. DuckDB has no external dependencies. DuckDB has…

Design and Implementation of DuckDB Internals duckdb.org/library/desi...

1 day ago 0 0 0 0
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Your Container Is Not a Sandbox The microVM ecosystem was battle-tested long before agentic AI created the demand. A landscape survey: every VMM, the shared Rust crate ecosystem, a dozen AI sandbox platforms, and honest trade-offs.

Your Container Is Not a Sandbox emirb.github.io/blog/microvm...

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WAL as a Data Distribution Layer Introduction

WAL as a Data Distribution Layer

1 week ago 0 0 0 0
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S3 Files and the changing face of S3 Andy Warfield writes about the hard-won lessons dealing with data friction that lead to S3 Files

S3 Files and the changing face of S3 www.allthingsdistributed.com/2026/04/s3-f...

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Your RAM Has a 60 Year Old Design Flaw. I Bypassed It.
Your RAM Has a 60 Year Old Design Flaw. I Bypassed It. Modern DRAM is based on a brilliant design from IBM. But, we're still paying for a latency penalty that's existed since the 60s! In this video, I'm introducing my personal research project…

Your RAM Has a 60 Year Old Design Flaw. I Bypassed It. www.youtube.com/watch?v=KKbg...

1 week ago 0 0 0 0
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Why Are You Not Claudemaxxing? From mass-dismissing AI coding tools to managing 5 Claude sessions on a walk. A prompt school origin story -- and your first useful AI win.

Why Are You Not Claudemaxxing?

3 weeks ago 0 0 0 0
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Memory Isn't Learning 27 Mar 2026

Memory Isn't Learning christophermeiklejohn.com/ai/zabriskie...

3 weeks ago 0 0 0 0
The Cost of Concurrency Coordination with Jon Gjengset
The Cost of Concurrency Coordination with Jon Gjengset In this talk, Jon Gjengset explores the true cost of concurrency coordination – from Amdahl's law down to CPU cache lines – and what we can do about it. Modern hardware is moving to more cores…

The Cost of Concurrency Coordination www.youtube.com/watch?v=tND-...

3 weeks ago 0 0 0 0
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TurboQuant: Redefining AI efficiency with extreme compression We strive to create an environment conducive to many different types of research across many different time scales and levels of risk.

TurboQuant: Redefining AI efficiency with extreme compression research.google/blog/turboqu...

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TonicDB: Databases without an OS? Meet QuinineHM (Filip Obradovic)
TonicDB: Databases without an OS? Meet QuinineHM (Filip Obradovic) CMU Database Group — PostgreSQL vs. The World Seminar Series (Spring 2026) Speakers: Filip Obradovic (https://www.linkedin.com/in/filipbobradovic/) March 23,…

TonicDB: Databases without an OS? youtu.be/YuEPZlXBImg?...

3 weeks ago 0 0 0 0
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How io_uring Overtook libaio: Performance Across Linux Kernels — and an Unexpected IOMMU Trap In Linux, there are two interfaces for efficient asynchronous disk I/O: traditional AIO (libaio) and the newer io_uring (liburing). It is…

How io_uring Overtook libaio: Performance Across Linux Kernels — and an Unexpected IOMMU Trap blog.ydb.tech/how-io-uring...

3 weeks ago 0 0 0 0
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Sandboxing AI agents, 100x faster We’re introducing Dynamic Workers, which allow you to execute AI-generated code in secure, lightweight isolates. This approach is 100 times faster than traditional containers, enabling millisecond startup...

Sandboxing AI agents, 100x faster blog.cloudflare.com/dynamic-work...

3 weeks ago 1 0 1 0
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Hypothesis, Antithesis, synthesis Introducing Hegel, our new family of property-based testing libraries.

Hypothesis, Antithesis, synthesis antithesis.com/blog/2026/he...

4 weeks ago 0 0 1 0
Gaurav Sarma Personal blog and portfolio

How Databases Checkpoint to Disk Without Stopping the World www.gauravsarma.com/posts/2026-0...

4 weeks ago 0 0 0 0
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RocksDB development finds a CPU bug This is the story of how a RocksDB unit test I added four years ago, a mini-stress test you might call it, revealed a novel hardware bug in a newer CPU. It w...

RocksDB development finds a CPU bug

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Inside the JVM: The Engineering Behind Enterprise Performance A deep dive into the JVM's adaptive architecture. What it costs, what it buys, and why it still leads in sustained production workloads.

Inside the JVM: The Engineering Behind Enterprise Performance

4 weeks ago 0 0 0 0

Investing in Infrastructure: Meta’s Renewed Commitment to jemalloc engineering.fb.com/2026/03/02/d...

1 month ago 0 0 0 0
A Trillion Transactions
A Trillion Transactions What is scale? We often talk about throughput and latency, or adding machines, and yet systems still fail at scale. Scale isn't just performance and distribution, scale is survivability. Because the…

A Trillion Transactions youtu.be/y2_BqkKTbD8?...

1 month ago 0 0 0 0
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When Did That Hotspot Happen? Mostly Java/JVM stuff. Focused on serviceability, observability and performance. All opinions are my own and I am not selling any of them.

When Did That Hotspot Happen?

1 month ago 0 0 0 0
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Introducing dial9: a flight recorder for Tokio | Tokio - An asynchronous Rust runtime Tokio is a runtime for writing reliable asynchronous applications with Rust. It provides async I/O, networking, scheduling, timers, and more.

Introducing dial9: a flight recorder for Tokio

1 month ago 0 0 0 0
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Claude Code experiment: Visualizing Hybrid Logical Clocks Yesterday morning I downloaded Claude Code, and wanted to see what this bad boy can do. What better way to learn how this works than coding ...

Claude Code experiment: Visualizing Hybrid Logical Clocks

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AprilNEA - Full Stack Engineer Full stack developer, open sourceror, serial entrepreneur.

Anthropic's Hidden Vercel Competitor "Antspace" aprilnea.me/en/blog/reve...

1 month ago 1 0 0 0
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The Little Book of Semaphores – Green Tea Press Green Tea Press

The Little Book of Semaphores

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Fitting a Query Engine in Three Cache Lines Why the bytecode that powers your analytical queries is smaller than a tweet, and why that matters more than you think.

Fitting a Query Engine in Three Cache Lines

1 month ago 0 0 0 0
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Closing the verification loop, Part 2: Fully autonomous optimization | Datadog Learn how Datadog achieves fully autonomous, verified code optimization in production using LLM-driven evolution, formal verification, and live traffic validation.

Closing the verification loop, Part 2: Fully autonomous optimization

1 month ago 0 0 0 0
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Closing the verification loop: Observability-driven harnesses for building with agents | Datadog Learn how Datadog verifies AI-generated systems at scale using deterministic testing, formal methods, and observability-driven feedback loops.

Closing the verification loop: Observability-driven harnesses for building with agents

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turbopuffer: Object Storage-native Database for Search (Simon Eskildsen)
turbopuffer: Object Storage-native Database for Search (Simon Eskildsen) CMU Database Group — PostgreSQL vs. The World Seminar Series (Spring 2026) Speakers: Simon Eskildsen (https://www.linkedin.com/in/sirupsen) March 09,…

turbopuffer: Object Storage-native Database for Search www.youtube.com/watch?v=pqoR...

1 month ago 1 0 0 0

MD-MVCC: Multi-version Concurrency Control for Schema
Changes in Azure SQL Database

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Using TLA+ to Fix a Very Difficult glibc Bug - Malte Skarupke - C++Now 2025
Using TLA+ to Fix a Very Difficult glibc Bug - Malte Skarupke - C++Now 2025 https://www.cppnow.org --- Using TLA+ to Fix a Very Difficult glibc Bug - Malte Skarupke - C++Now 2025 --- The glibc condition variable (meaning std::condition_variable) was subtly broken for…

Using TLA+ to Fix a Very Difficult glibc Bug www.youtube.com/watch?v=Brgf...

1 month ago 0 0 0 0
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GNU and the AI reimplementations - <antirez> GNU and the AI reimplementations

GNU and the AI reimplementations antirez.com/news/162

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