Complete ESP32 CSI hardware guide: best boards for WiFi sensing, multi-node setup, router compatibility, cost tables, and buying guide for India and Pakistan. Read more ›
Upgrading PostgreSQL in production is not fun. You have real data, real users, and a version of Postgres that’s probably several major releases behind. The obvious approach (dump, upgrade, restore) works fine on a 10GB database on a Saturday night. It doesn’t work when you have TBs of data, applications that can’t afford hours of downtime, and a team watching the monitoring dashboard at 2am.Logical replication solves this. I’ve run it in production, and it works well, but there are a few prac... Read more ›
I’ve been working on in meshoptimizer recently; in the process I stumbled upon two optimizations that I did not end up using but I thought they might be fun to write about! The optimizations that actually made it in require some higher level background / explanations that will have to wait until another day :) Both optimizations discussed here touch upon two new (for me) features of AVX-512 that I haven’t had a chance to experiment with until now, and both apply to the same problem: how to de... Read more ›
Pierre Zemb is a staff engineer at Clever Cloud where he's building data layers API-compatible with services like Redis, PostgreSQL, and etcd on top of FoundationDB. Read more ›
Concurrent programming has a reputation problem. Mention “lock-free” in conversation and watch eyes glaze over. The terminology sounds… Read more ›
Highlights Maxx Crawford added a pref to hide the New Tab logo so users can opt out of branding without altering page layout or resorting to CSS overrides. Harshit enabled … Read more ›
How a technically superior but economically isolated solution slowly lost ground to a good-enough one built on infrastructure everyone already owns. Read more ›
Zilliz has produced a Milvus Vector Lakebase FAQ to help position its vector database and vector lak ... Read more ›
Large Language Models (LLMs) achieve strong performance on reasoning tasks, but whether this reflects faithful logical inference or heuristic approximation remains unclear. We study this question in legal entailment by comparing three paradigms, including pure LLM classification, LLM-based Formal Reasoning, and solver-based Formal Reasoning using the Z3 SMT solver, on a re-annotated subset of ContractNLI across five LLMs. Our re-annotation revea... Read more ›
Deep in the heart of Corax (RavenDB’s querying engine), everything deals with something called a Posting List. Posting Lists are a way for the engine to say “all of those documents have the term Fast for the field Speed”. Conceptually, a Posting List is an ordered set of document ids. In this case (and this is important, the ids in question are numeric, not RavenDB’s document id, which is a string).An interesting problem with Posting Lists is that a term can be unique (such as a GUID) - only ... Read more ›
Why moving from garbage-collected languages to memory-safe systems programming is the ultimate career level-up. Read more ›
We improve the performance of the lattice-based cryptosystem Dilithium on AVX2 and NEON by deeply exploiting its algorithmic properties, such as small coefficient bounds and high sparsity, with the distinct instruction-level profiles of the underlying architectures. On AVX2, we deploy a single-modulus 16-bit NTT for $c \cdot \mathbf{s}_i$ and a multi-moduli 16-bit NTT coupled with a vectorized CRT reconstruction for $c \cdot \mathbf{t}_0$. These instruction-level optimizations accelerate the ... Read more ›
A tour through Read Committed, Repeatable Read, and Serializable, and why the same three words guarantee completely different things depending on which database you ask. Read more ›
Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞 - fix(qa): isolate OTEL smoke exporter env · openclaw/openclaw@3632c62 Read more ›
Time-series data is one of the most common types of data generated by modern applications. Every log entry, API request, metric, transaction, sensor reading, or user interaction is recorded with a timestamp, making time the primary dimension for analysis. As organizations collect billions of these records, efficiently storing and querying them becomes increasingly challenging. This is where ClickHouse® excels. Although ClickHouse is not a dedicated time-series database, its columnar storage a... Read more ›
Mongoterm is a terminal-based user interface (TUI) for interacting with MongoDB directly from the command line. - Fuse441/mongoterm Read more ›
Existing Decentralised Identifier (DID) methods require coordination, an agreed global order of operations, to update a DID document: blockchain-anchored methods incur fees and latency; lightweight peer methods (did:key, did:peer) offer no update mechanism; and Sidetree methods still require blockchain ordering for finality. We present did:crdt, a DID method that targets W3C DID Core and removes the need for coordination entirely: there is no le... Read more ›
A network port is a numbered endpoint that lets one host run many services at once. The word traces from the Latin for a gate or harbour, through the general computing sense of a connection point, into the TCP/IP port formalised by Jon Postel and Vint Cerf in the early ARPANET RFCs. Read more ›
I might have mentioned before that I've been slowly working through the Simple tutorial for building a Sea of Nodes compiler. A lot of it is still sort of going over my head but I've learned a couple of interesting things in the process of working through it that I think I can bring back to a query planning context. One thing I learned from it is that my understanding of Hash Consing was a bit myopic. Or incomplete. I have always thought of hash consing as a way to turn value equality into po... Read more ›