4 KB of Text Was Holding 200 MB of Memory
kept: 200 strings, 3.9 KB of text heap: +200.0 MB That's the output of a small test, and the two lines should not be able to coexist. An array holds 200 short I…
Englishdev.to Node
最新资讯
言栖资讯收录 128630 篇 AI、开发与建站文章（English），按发布时间排序，支持搜索与按语言筛选。
MCP Explained Simply: How to Build a Claude‑Powered AI Agent with AWS Lambda
Ever wondered how Claude can keep context across dozens of calls without re‑sending the whole prompt each time? The Model Context Protocol (MCP) makes that poss…
Englishdev.to Node
Your revenue ranking needs more than a ticker key
Your revenue ranking can change after a join, before any company reports new revenue. You're preparing the account priorities for Friday. The enrichment job has…
Englishdev.to Node
Fifty pages about fifty tests, 210 sources, and the 29 tests we refused to write a page about
CogniPrep simulates employer assessments. Until last week the site had two kinds of page for them: a hub per vendor ( /games/shl , covering the whole suite) and…
Englishdev.to Testing
Nine Dutch pages declare an English twin, and the test proves it by reading the twin's source file
CogniPrep is in English. Last week it got fifteen Dutch pages, at /nl and beneath it: one hub, nine pages about Dutch assessment publishers, and five about test…
Englishdev.to Testing
A WhatsApp AI Assistant Can Sound Certain and Still Be Wrong: A 16-Case Grounding Test
A WhatsApp AI Assistant Can Sound Certain and Still Be Wrong: A 16-Case Grounding Test A business can show a WhatsApp AI assistant a folder of approved FAQs and…
Englishdev.to Testing
Detect Normalized CSV Header Collisions Before Mapping an Order
An order file has both Order ID and order_id . If an adapter trims and normalizes those names before constructing a lookup, the two columns may become the same …
Englishdev.to Testing
My agents kept dropping what resisted. 10 of my 19 vetoes were about that.
On September 30, an agent was building a catalogue of every setting in our back-office, nearly three thousand keys. The goal I had set that day: each key either…
Englishdev.to Testing
What AI Penetration Testing Tools Actually Automate (And What They Don't)
Most of an AI penetration test is not AI. Discovery is a port scan and a crawler. Exploitation is an exploit module. Verification is a request and a response. T…
Englishdev.to Testing
I built a free Omegle alternative with Angular, Socket.io and WebRTC
When Omegle shut down in November 2023, a lot of people lost a simple thing: open a page, click a button, and you're talking to a random person. No account, no …
Englishdev.to Angular
Put an AI agent in one process and day one gives you two walls
Picture an ordinary request: have an AI pull data from thirty websites, clean it up, and turn it into a report. This is not a chat — one question, one answer, d…
Englishdev.to Kubernetes
We downloaded our config in a postStart hook and one pod in four started without it
Our booking service decides which carriers it can book with from a file, carriers.json, that lists each carrier's endpoint and the services it offers. To keep o…
Englishdev.to Kubernetes
Our restart alert resolved itself after ten minutes and the pod kept crashing until Monday
Our EDI poller collects the purchase orders that suppliers drop on our SFTP server and imports them into the ERP. It runs as a single pod with the Recreate stra…
Englishdev.to Kubernetes
Why Price History Data Needs Product Normalization Before You Trust It
Price history sounds like a simple data problem. Store a product ID. Record a timestamp. Record a price. Draw a chart. But real commerce data is rarely that cle…
Englishdev.to Programming
Why Product Normalization Matters for Accurate Price History Data
Price history sounds like a simple data problem. Store a product ID. Record a timestamp. Record a price. Draw a chart. But real commerce data is rarely that cle…
Englishdev.to Programming
How to Make Your Agent Audit Trail Reliable: Batching, Retries, and Idempotency Keys
An audit trail has one job: to be right when someone needs it. Not usually right, not right on quiet days. Right when an auditor, a customer, or your own engine…
Englishdev.to Programming
Kafka consumers in production: ordering, poison messages and lag
Kafka brokers are remarkably reliable. When a Kafka-based system misbehaves, the cause is usually on the consumer side: a message nobody can process, a loop tha…
Englishdev.to Java
Our Async Event Tests Passed 9 Times Out of 10. The Flakiness Was Hiding a Real Race Condition
The test failed about once in every ten CI runs, which is rare enough to ignore and frequent enough to hate. It covered a simple flow: an order was saved, an ev…
Englishdev.to Java
-U0, -U3 or --function-context: Count the Tokens Your Review Agent Reads per Diff
Book: LLM Observability Pocket Guide Also by me: Thinking in Go (2-book series) — Complete Guide to Go Programming + Hexagonal Architecture in Go My project: He…
Englishdev.to Git
Fourteen branches, 132 new pages, and 46 links written to pages that did not exist yet
CogniPrep is a practice library for employer assessments. Last week it grew by 132 public pages in one round: 48 employer guides, 9 new test-format pages, 3 hub…
Englishdev.to Git