The daily ledger

August newsletter is out

The August edition of my sponsors-only monthly newsletter is out. If you are a sponsor (or if you start a sponsorship now) you can access it here. This month: We got more details on OpenAl's accidental cyberattacks…

How to Start an LLM-Assisted Java Project

Most context engineering goes into supplying the model with knowledge. For a Java project nearly all of that is redundant, because the model already read the specs. What it does not have is an opinion about how your…

Reducing duplication in `TryFrom`

Hey folks, I've got the following duplication: impl TryFrom<Reader<&[u8]>> for DictionaryStemmer { type Error = Error; fn try_from(mut reader: Reader<&[u8]>) -> Result<Self, Self::Error> { let mut term_stems:…

Writing a loan calculator means writing a root finder

Norway requires every consumer loan to advertise its effective annual rate, not the nominal one. The difference sounds like a rounding detail. It is not, and the reason is that there is no closed-form solution for it,…

Grade the Guesses: A Bootcamp Lab With an Assumption Gate

Cheap AI code is not the hard part. Unstated assumptions are. A student types "add a waitlist endpoint." The agent returns JWT, Redis, Postgres, and a welcome email. Looks senior. It is mostly fiction. This lab grades…

6 types of charts that backend developers must master

In backend development, code solves the "how" problem, while charts solve the "what" and "why" problems. Diagrams are a "system perspective mirror" for backend developers—they make invisible calls visible, unclear…

Do not stop your AI video timer at provider success

A successful video-generation response is not the same event as a video becoming playable in a browser. If a dashboard stops its timer at provider success, the number can exclude output transfer, browser loading, and…

Rendering 24 Shareable Images a Day With HTML, CSS and Playwright

Rendering 24 Shareable Images a Day With HTML, CSS and Playwright I'm Xiaosuanshi (小算师) — a free site that serves daily horoscopes for all 12 Western zodiac signs and 12 Chinese zodiac animals, fully automated. This is…

I Built a Movie Website 🎬 1.My Movie Website 2.I Built a Movie Website 3.Movie Website Project 4.Building a Movie Website 5.My First Movie Website

Triage an Agent PR: Trust, Revert, or Test Each Hunk

A backend team received an agent-generated pull request on Tuesday morning. The subject line claimed a quiet session-cookie expiry fix. A green CI badge sat under a 240-line TypeScript diff. The human reviewer had…

I got tired of AI resume spam and ghost jobs, so I built an open-source CLI agent for developers

Job hunting in 2026 is mathematically broken. Recruiters use ATS bots to reject candidates in 6 seconds. Companies post ghost jobs that stay open for months. And the market is flooded with paid SaaS tools charging…

Source Positions Are a Coordinate System, Not Just Line and Column

A Markdown linter can detect the right problem and still highlight the wrong character. The usual cause is not parsing. It is a coordinate-system mismatch: one component counts UTF-8 bytes, another counts Unicode code…

Dead Ends, Then One Rule: A Pairing Session on Agent Assumptions

The checkout service was already in production. A junior engineer sat down with a senior on a Tuesday afternoon and pointed at a half-specified refund path: no idempotency key in the ticket, no owner for the existing…

Delta-State CRDTs: Solving the Bandwidth Problem Coordination-Free Replication Creates

CRDTs let replicas merge concurrent edits without coordination. The catch is what it costs to keep them talking to each other, and how delta-state CRDTs quietly fix it. Coordination-free replication keeps showing up as…

Your AI Agent's Reasoning Just Stopped Traveling Between Models

For the last two years, most of us building with large language models made a quiet assumption without ever writing it down anywhere. We assumed that the thinking a model produces is just text. Tokens in, tokens out. If…

Practical LLM Agent Development: Architecture, Tools and Best Practices

Large Language Models have moved beyond simple text generation. Modern applications can use LLMs as the reasoning layer of an AI agent that retrieves information, calls tools, interacts with APIs, and completes…

From Spec-Driven Development to Living Specifications in Java Projects

From Spec-Driven Development to Living Specifications in Java Projects Coding agents have changed the speed at which we can produce software. But producing code faster does not automatically mean producing better…

SVG-Score: Human-Aligned Evaluation of Text-to-SVG Generation

arXiv:2609.03806v1 Announce Type: new Abstract: Scalable Vector Graphics (SVG) generation is attracting increasing attention as generative models improve in expressiveness and controllability. Progress, however, is held…

Mockaroo Alternative: Unlimited Client-Side Mock Data Generator (Free, No Signup)

Mockaroo Alternative: Unlimited Client-Side Mock Data Generator (Free, No Signup) 原文发布于 Dev.to · 2026-08 上周我在做一个项目的数据库测试，需要生成一批假用户数据。 随手搜了"mock data generator"，第一个结果就是 Mockaroo。界面确实专业——直到我选了200行，它告诉我：你的免费额度已用完，升级 $49/月…

Trey Hunner: Python Morsels now has spaced repetition

Nearly every book I’ve read on teaching and education over the past decade has talked about the value of spaced repetition. For much of that time, spaced repetition has been something I would recommend learners do, but…