SShortSingh.
TopTechnologyAI & MLStartupsProgrammingScienceBusinessFinanceCrypto & Web3World

Programming

LatestTopDiscussed
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at Hacker News
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
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.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Turtle Trading Rules Explained: N, Units, Breakouts and Stops

The Turtle trading rules form a mechanical trend-following system built on Donchian channel breakouts for entries and volatility-based position sizing. The author walks through each rule as stated in the 2003 'Original Turtle Trading Rules' PDF, using worked examples. N, the 20-day Wilder average of true range, underpins most other rules, and position units are sized so that a 1N move equals 1% of the account. Entries occur on breakouts of 20- or 55-day highs and lows, with unit additions every half N and stops set 2N away. The post also notes six points where the original PDF leaves decisions to the trader, and reports that the author's backtest of these rules on 26 Exness markets from 2020 to 2026 lost 57.7%.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Measuring How Long a Silent Failure Lasted Requires Bounded Start and End Points

A blog post examines what it takes to turn a 'time broken before detection' figure into a valid duration. The author argues that a duration needs a bounded start, a bounded end, and persistent evidence to read both from. Using a machine whose push attempts failed for forty days, the post shows how timestamps in logs and repository history can date the window. It also warns that counts of retry events are not the same as spans of time, a common source of inflated durations. The author stresses that durable version-control history is the strongest evidence for silent failures.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

mnemoa Tool Flags Stale and Redundant Lines in AI Coding Agent Instruction Files

The developer built mnemoa, a Rust-based tool that scans AI coding agent instruction files such as AGENTS.md and CLAUDE.md to find outdated, duplicated, or contradictory guidance. It checks for overly long instructions, broken paths and commands, plans that have drifted from the code, and rules that linters or formatters could enforce instead. The tool produces a dry-run prune plan with estimated token costs and can convert rules into enforceable checks, logging each change in a ledger. Deterministic checks run locally, while an optional LLM feature is disabled by default, and it supports seven coding agents along with a CLI, HTTP API, Python SDK, and GitHub Action. The developer is seeking feedback on which findings prove useful and which are noisy.

0 comments Read more at DEV Community
0
ProgrammingHacker News ·

Dijkstra's 1978 essay argues against natural language programming

A 1978 note by computer scientist Edsger W. Dijkstra, resurfaced on Hacker News, criticizes the idea of programming in natural language. The piece argues that everyday language is ill-suited to precise instructions because of its ambiguity and vagueness. Dijkstra contends that formal notations are essential for reasoning reliably about programs. The source text provided here is limited to a link and discussion metadata, so the full argument is not reproduced in this summary.

0 comments Read more at Hacker News
0
ProgrammingDEV Community ·

Managers Build Trust Through Follow-Through, Fairness and Honest Communication

Trust at work is shaped less by how much people like a manager than by how that manager responds when things go wrong. Missed commitments, especially when left unexplained, can quickly turn small problems into credibility issues. The article recommends being transparent about changing decisions, applying expectations consistently and explaining the reasoning behind them, and following through on promises or flagging delays early. It also argues that addressing problems directly is better than avoiding hard conversations, and that owning mistakes with a clear plan for change helps repair trust when consistent action follows.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Keycloak Step-Up Authentication: ACR and LoA Flows, and the Cookie Bypass Gap

Step-up authentication lets users sign in with a lightweight method, such as a password or managed-device passkey, and requires a stronger factor only for sensitive actions like changing payout details or approving transfers. Keycloak implements this through Authentication Context Class Reference (ACR) values mapped to numeric Levels of Authentication (LoA), configured in the login flow instead of application code. The setup involves a realm-level ACR-to-LoA mapping, a browser flow with conditional subflows guarded by level conditions, and client requests that specify the required level. Keycloak's levels are hierarchical, which fits poorly when several unrelated authentication methods are considered equivalent. The guide also flags two places where step-up can quietly fail to protect an application.

0 comments Read more at DEV Community
← NewerPage 9 of 2829Older →