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ProgrammingDEV Community ·

Week of October 30 Set to Be Heaviest October Layoff Week, Per WARN Notices

Layoff Atlas data drawn from state WARN notices shows 8,520 workers scheduled for layoffs to take effect the week of October 30, the largest weekly total for October. The figures reflect employers' filed plans rather than confirmed job losses, and dates or counts can change as notices are revised. The week of November 13 carries the highest total on the current calendar at 8,744 workers, with November overall showing heavy scheduled cuts. Washington, California, Illinois, Texas and Ohio report the most affected workers across the 90-day window. Totals will shift as new notices are filed and older ones roll out of the window.

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ProgrammingDEV Community ·

Developer Deploys First Website on Render for Hacktoberfest 2026

A developer has published their first website on Render as part of Hacktoberfest 2026. The post shares a link to the live site, hosted at a hello-render-hacktoberfest subdomain. The author says they are looking forward to completing more challenges during the coming week. The item is a brief personal update rather than a detailed report, so it provides few further specifics about the project itself.

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ProgrammingDEV Community ·

ZATCA Sets TLV-Encoded QR Code Rules for Saudi E-Invoices in Phases 1 and 2

Saudi Arabia's Zakat, Tax and Customs Authority requires e-invoice QR codes to be cryptographic data structures rather than simple links. QR data must be organized using Tag-Length-Value encoding and then converted to a Base64 string before submission. Phase 1 requires five tags covering seller name, VAT number, timestamp, invoice total, and VAT total. Phase 2 adds four cryptographic tags for the invoice hash, digital signature, public key, and certificate signature. A developer guide published on DEV Community includes a TypeScript implementation and notes common rejection errors such as BR-KSA-26 and BR-KSA-27 when the TLV structure is non-compliant.

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ProgrammingDEV Community ·

LazyDesk AI: An Open-Source Productivity Assistant Concept Under Development

A developer is building LazyDesk AI, a concept for a lightweight AI-powered productivity assistant aimed at reducing repetitive digital tasks. The planned features include a note summarizer, a smart task manager, a daily planner, a text helper, a focus timer, and a saved notes function. The project favors open-source AI models and accessible web technologies so tools can be used without expensive subscriptions or complex setups. It is being built with HTML, CSS, JavaScript, optional local AI inference, and browser-based storage, with the final approach depending on what runs reliably on everyday hardware. The creator, who is using the project as a learning exercise for the Hacktoberfest DEV Challenge, plans to test core features, document setup, and invite community contributions.

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ProgrammingDEV Community ·

Meta Conversions API in Node.js: Deduplication, Hashing and Match Quality

Browser pixels miss a growing share of purchases due to Safari tracking protection, ad blockers, consent banners and short-lived cookies. Meta's Conversions API addresses this by sending the same events from a server. The article argues that deduplication, normalised SHA-256 hashing and match quality determine whether a server-side setup helps or hurts. It recommends a shared event_id, such as one derived from the order ID, so Meta can merge the browser and server copies of a Purchase event. It also shows a Node.js example that normalises personal data before hashing, while sending IP, user agent and click or browser identifiers unhashed.

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ProgrammingDEV Community ·

Python Monitor Tracks Price Gaps Between Polymarket and Kalshi Prediction Markets

A DEV Community tutorial shows how to build a Python agent that polls prediction markets Polymarket and Kalshi for the same event's probabilities. The author cites an October 18, 2024 example in which the two platforms priced the Fed's October rate decision about four percentage points apart. Manually tracking several platforms is impractical, so the agent automates polling, normalizes contract prices to a 0-1 probability scale, and computes the spread. The design uses asyncio for concurrent requests, public APIs only, and explicit termination via a maximum iteration count or keyboard interrupt. The post also flags challenges such as differing API formats, inconsistent contract wording, and error handling.

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ProgrammingHacker News ·

Hacker News Post Links to Awakin Essay Titled 'This I Believe'

A post on Hacker News drew five points and no comments, linking to an article hosted on awakin.org. The article is titled 'This I Believe' and is listed under the site's read section. The provided material contains only the link and engagement metadata, so the essay's actual content and arguments cannot be summarized. Readers would need to visit the linked page to learn what the piece covers.

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ProgrammingDEV Community ·

Claude Code MCP Setup: Where Server Configuration Lives and How Scopes Conflict

Claude Code must know about an MCP server through configuration before it can connect to it. Definitions can be stored at project, user, or local scope, or be provided centrally by an organization, depending on who should use them. A project's shared .mcp.json file can declare a team's server without exposing personal credentials, while local scope keeps individual secrets private to one project. When the same server name appears in several scopes, Claude Code uses the complete entry from the highest-precedence source rather than merging fields. Organization-managed definitions override the other sources when duplicated.

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ProgrammingDEV Community ·

Track Your Net Worth Monthly in Google Sheets With Assets, Debts, and a Growth Chart

Net worth, the gap between what you own and what you owe, is presented as a clearer indicator of financial direction than bank balance alone. The guide walks readers through building a monthly tracker in Google Sheets, with an accounts list tagged as assets or debts and a column for each month. Formulas total assets and debts, calculate net worth and its monthly change, and compute a debt ratio that the author suggests keeping below 50%. A line chart of net worth over time and a category breakdown with a pie chart are also described. The article closes with a promotion for the author's own paid and free budget templates.

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ProgrammingDEV Community ·

Why specific names beat generic ones, from a murder statue to IKEA

An essay argues that naming something gives people a handle on it, even when the thing is dangerous. It contrasts the nickname 'Peanut' for a deadly statue in a horror story with the template-generated names common among software companies. The author contends that generic, consultant-style names fit everyone and so tell no one anything. The piece cites IKEA's place-based and occupation-based naming as an example of specificity that scales, and suggests specific names are easier to remember and repeat.

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ProgrammingDEV Community ·

BlockVectra Data API TypeScript client v0.1.3 rejects missing API keys at startup

The BlockVectra Data API TypeScript client now throws an error when it is created with a missing, empty or whitespace-only key, catching configuration mistakes before the first request. Non-empty keys are passed through unchanged, with validity still checked by the API itself. Version 0.1.3 is distributed as a prebuilt GitHub package, not yet through npm's public registry, and includes JavaScript and TypeScript declarations. The release also adds an isDataApiError guard that identifies structured JSON error responses while preserving the original HTTP status. The developers note that the release passed unit tests and example checks, but the credentialed live API test was skipped.

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ProgrammingDEV Community ·

JWT Security in 2026: Signing Algorithms, Common Attacks, and Token Rotation

A DEV Community guide examines JSON Web Token security, explaining how JWTs are structured and why they remain frequently misconfigured in modern applications. It compares signing algorithms such as HS256, RS256, ES256, and EdDSA (Ed25519) and their cryptographic trade-offs. The article details major vulnerabilities, including algorithm confusion, the "alg: none" exploit, and kid header injection attacks. It also highlights risks such as storing tokens in localStorage, which exposes sessions to cross-site scripting theft. The guide concludes with recommended practices for stateless authentication and Refresh Token Rotation.

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ProgrammingDEV Community ·

Which messaging apps does OpenClaw support? A capability-based breakdown

OpenClaw, formerly known as Moltbot with Clawdbot still used in some community circles, is expanding quickly, prompting questions about which chat platforms it works with. The article argues that 'supported' is ambiguous and should be understood across three tiers: native official connectors, community-maintained connectors, and bridges built through webhooks or APIs. Platforms with event webhooks and outbound message APIs are the easiest to integrate, while encrypted or policy-restricted apps often only allow narrow or notification-style interactions. The author recommends validating six dimensions before rollout, including event coverage, outbound capabilities, identity fidelity, reliability, security, and rate-limit handling. A reference pipeline is outlined, running from signature-verified webhook ingress through event normalization and policy enforcement to the OpenClaw runtime and back out to the messaging app.

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ProgrammingDEV Community ·

Measuring what idle hardware earns: a VPS, a GPU and a Raspberry Pi tested

The author checked three idle machines to see whether they could earn money, expecting a clear ranking. A rented VPS turned out to be barred from crypto mining under its providers' terms, and the estimated yield would not cover its rent anyway. A desktop RTX 5060 Ti could mine a small coin for about 0.99 USD a day gross, but German electricity costs made the result marginal or negative depending on power draw. Renting the same GPU out roughly broke even after power costs. The Raspberry Pi 1 was the one machine where the outcome was a small, modest win.

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ProgrammingDEV Community ·

DeepSeek publica como código abierto DeepInfer, su motor de inferencia para modelos de IA

DeepSeek liberó el 20 de octubre DeepInfer, el motor de inferencia que usa en sus servicios de producción, bajo licencia Apache 2.0, y el repositorio superó las 19.000 estrellas en GitHub a los pocos días. La herramienta reparte el cómputo entre chips, agrupa peticiones y controla la velocidad de respuesta, funciones que definen buena parte del costo de operar un servicio de IA. La primera versión solo ejecuta el modelo DeepSeek-V4.1-Flash en modo por lotes, y aún carece de caché de claves y valores, separación completa de fases y balanceo de carga. Según el repositorio, el proyecto se apoya en gran medida en vLLM, al que se suman núcleos optimizados propios y soporte para chips Nvidia Blackwell y Ascend 950 de Huawei. La publicación coincidió con una orden del Gobierno estadounidense que retiró los modelos de DeepSeek de los sistemas federales.

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ProgrammingDEV Community ·

Five NGINX CVEs Depend on Configuration, So Exposure Must Be Measured Beyond Version

Two NGINX releases, 1.31.7 and 1.30.6, fix five vulnerabilities, each triggered only when a specific directive is enabled. This makes exposure a question of configuration rather than version alone. The article explains that scan-based fingerprinting, such as ZoomEye queries on app or Server header values, cannot see those directives and so cannot reliably count vulnerable deployments. It suggests narrowing candidates, for example TLS-terminating edge hosts or QUIC-terminating deployments, and then confirming exposure by reviewing each asset's configuration with nginx -T. It also stresses reporting search queries, fields, collection dates and units accurately when presenting exposure counts.

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ProgrammingDEV Community ·

Aprenda inglês por chunks: 20 expressões prontas para usar no dia a dia

O artigo argumenta que decorar palavras isoladas torna a fala lenta, pois o cérebro precisa montar cada frase peça por peça. Ele propõe o estudo de chunks, unidades de várias palavras prontas, como "it depends on..." e "get back to you", que nativos usam com naturalidade. Segundo o texto, essas unidades aceleram a fala, já trazem a gramática correta embutida e soam mais naturais. O autor também afirma que aprender chunks ajuda a compreender a fala rápida, porque o ouvinte reconhece blocos em vez de palavras soltas. Por fim, o texto apresenta 20 expressões úteis agrupadas por situação de uso, com exemplos e significados em português.

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ProgrammingDEV Community ·

SGLang Outpaces vLLM on Prefix-Heavy Agent Workloads, but Gaps Shrink or Reverse Elsewhere

Benchmarks of multi-turn LLM agent workloads with an 8,000-token system context show SGLang's RadixAttention cutting time-to-first-token from 440ms to 38ms, while vLLM v0.6 with prefix caching reduced it from 480ms to 92ms. The gap stems from data structures: SGLang stores the KV cache in a radix tree that reuses any common prefix, whereas vLLM's block-based prefix caching is less effective when overlaps don't align to block boundaries. A separate 4,096-token test at 75% prefix overlap showed SGLang reaching a 78.6% cache hit rate versus 41.2% for vLLM, with substantially lower latency percentiles. However, the advantage disappears when workloads lack shared prefixes, where the two engines performed nearly identically on Llama 3.3 70B. On a single H100 running Qwen2.5-7B, vLLM delivered higher raw throughput, though SGLang retained a notable time-to-first-token advantage.

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ProgrammingDEV Community ·

Notebook update: A(7) <= 8 bounds the last open Kakeya-type cases with 45 instances closed

An open notebook on Kakeya-type problems extends earlier work on finite 2-groups whose involutions are all central. The central question reduces to a number A(t), and the author reports that the largest anisotropic dimension over F_2^7 is now bounded by 8, with A(7) = 7 still unresolved. The argument proceeds by ruling out rank-4 elements and then case-checking the rank-3 shapes, which closes 45 remaining instances labeled (B6). A new bounds script recomputes the derived corollaries and passes unit tests against hand-checked values. The first open cases with small b, (11, 2) and (11, 3), still depend on bounds for A(8) and A(9). Certification jobs for the closed instances are queued but have not yet produced results.

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