DEV Community • 2026-07-29 10:00

Build a System Monitor Dashboard with Python

Build a System Monitor Dashboard with Python tags: python, devops, monitoring, tutorial tags: python, devops, monitoring, tutorial Imagine staring at a blinking server alert at 2 AM, wondering if it’s a CPU spike, a memory leak, or just a glitch. You could spend hours debugging, or you could have built a real-time dashboard that showed you the problem before it became an emergen...

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DEV Community • 2026-07-29 10:00

Concurrent and Parallel Programming in Dart with the Isolate class

No one can live entirely on their own, nor can any country or society exist in isolation. -- Daisaku Ikeda Every language is now having its own way to deal with concurrency and parallel programming, in the case of Dart, the designers created Isolates. By default, Dart is running its procedures inside the main isolate, in a single thread, a bit like JavaScript. Using one thread can have drawbac...

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DEV Community • 2026-07-29 09:59

Arc 14 Catch-up: Agentic Solana

An AI agent with access to a wallet sounds powerful. It also sounds like it could be risky. A language model can misunderstand a request, choose the wrong tool, repeat an action, or confidently pursue a goal that should never have been allowed in the first place. Giving it unrestricted signing authority would turn those mistakes into transactions. Arc 14 was about building something more useful...

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Hacker News: Front Page • 2026-07-29 09:59

The only road in London where you have to drive on the right

Article URL: https://www.mylondon.news/news/transport/only-road-london-you-drive-30499294 Comments URL: https://news.ycombinator.com/item?id=49095361 Points: 4 # Comments: 1

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DEV Community • 2026-07-29 09:58

Cisco Talos IR Q2 2026: Observed Attack Chains of M365 Token Compromise and RMM-Disguised Ransomware

Cisco Talos IR Q2 2026: Observed Attack Chains of M365 Token Compromise and RMM-Disguised Ransomware 1. Basic Information Article Title: IR Trends Q2 2026: Phishing and weaponized remote management tools drive attack chains Publisher: Cisco Talos Blog Publication Date: July 28, 2026 Original Article: https://blog.talosintelligence.com/ir-trends-q2-2026/ Related Sources...

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DEV Community • 2026-07-29 09:57

Fastjson 1.x CVE-2026-16723: Unauthenticated RCE Targeting Default Spring Boot Fat-Jars

Fastjson 1.x CVE-2026-16723: Unauthenticated RCE Targeting Default Spring Boot Fat-Jars 1. Basic Information Article Title: Unpatched Fastjson Vulnerability Exploited in Attacks Publisher: SecurityWeek Publication Date: July 28, 2026 Original Source: https://www.securityweek.com/unpatched-fastjson-vulnerability-exploited-in-attacks/ Related Sources: Alibaba Security ...

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DEV Community • 2026-07-29 09:57

ELECOM Wireless LAN Devices JVN#56870912: OS Command Injection in Management Screen and Configuration Restoration

ELECOM Wireless LAN Devices JVN#56870912: OS Command Injection in Management Screen and Configuration Restoration 1. Basic Information Article Title: Multiple Vulnerabilities in ELECOM Wireless LAN Routers and Access Points (July 2026) Source: JVN Publication Date: July 28, 2026 Original URL: https://jvn.jp/jp/JVN56870912/index.html Related Source: ELECOM Notice (Linke...

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DEV Community • 2026-07-29 09:57

vBulletin CVE-2026-61511: Unauthenticated RCE via Public AJAX Template to `eval()`

vBulletin CVE-2026-61511: Unauthenticated RCE via Public AJAX Template to eval() 1. Basic Information Article Title: vBulletin fixes critical pre-auth RCE flaw with public exploit Publisher: BleepingComputer Publication Date: July 28, 2026 Original URL: https://www.bleepingcomputer.com/news/security/vbulletin-fixes-critical-pre-auth-rce-flaw-with-public-exploit/ Relate...

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DEV Community • 2026-07-29 09:57

IPMI/BMC Authentication Hash Leak: Stealing Out-of-Band Server Management via Offline Cracking

IPMI/BMC Authentication Hash Leak: Stealing Out-of-Band Server Management via Offline Cracking 1. Basic Information Article Title: Over 24,000 exposed server BMCs leak password hash via decades-old flaw Publisher: BleepingComputer Publication Date: July 28, 2026 Original Source: https://www.bleepingcomputer.com/news/security/over-24-000-exposed-server-bmcs-leak-password-...

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Product Hunt — The best new products, every day • 2026-07-29 09:55

Phantom Voice

Local push-to-talk dictation for Mac Discussion | Link

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DEV Community • 2026-07-29 09:51

Handling Asynchronous Webhook Notifications & Callbacks in Joget via BeanShell

Handling Asynchronous Webhook Notifications & Callbacks in Joget via BeanShell When integrating Joget DX with external platforms—such as payment gateways, SMS providers, or ERP systems—requests are often processed asynchronously. The external system accepts a request immediately and dispatches an HTTP POST webhook callback to Joget minutes or hours later when processing completes. ...

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DEV Community • 2026-07-29 09:50

Generating Multilingual HTML Reports with Attachment Download Links in Joget

Generating Multilingual HTML Reports with Attachment Download Links in Joget Creating customized executive report summaries in Joget DX often requires more than simple database lists. Real-world business reports frequently need to join multiple tables, translate status labels based on the user's active locale (#platform.currentLocale#), and generate secure file download links for form a...

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DEV Community • 2026-07-29 09:49

I Built 23 PDF Tools That Don't Make You Sign Up, Pay, or Trust a Server

If you've ever used an online PDF tool, you know the routine. You need to merge two files. You find a site. You upload. Then: "Sign in to download." "Free plan: 2 tasks per day." "Your result is ready — with our watermark on it." "Upgrade to remove limits." A five-second job turns into an account, a countdown, and a branded output you can't send to a client. That's the friction that made me ...

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DEV Community • 2026-07-29 09:49

How to Update Joget App Environment Variables Programmatically in BeanShell

How to Update Joget App Environment Variables Programmatically in BeanShell In Joget DX, App Environment Variables are commonly used to store global configuration values—such as API endpoints, tax rates, batch counter sequences, or feature flags. While administrators can update these variables manually through Joget App Center, enterprise workflows often need to update environment vari...

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DEV Community • 2026-07-29 09:48

Custom Cell Renderers & Action Buttons in Joget Spreadsheet Elements

Custom Cell Renderers & Action Buttons in Joget Spreadsheet Elements The built-in Spreadsheet Element in Joget DX provides a spreadsheet-like interface for managing tabular records inside forms. However, standard spreadsheet columns only support basic text or dropdown inputs out of the box. If you want to add row-level action buttons (like a Delete Row button) or turn plain cell te...

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DEV Community • 2026-07-29 09:40

Google Says llms.txt Does Not Affect Search or AI Overviews: What SEO Teams Should Do

Google has clarified that llms.txt does not affect Google Search rankings or its generative AI search features, including AI Overviews and AI Mode. For SEO teams that have treated the file as a potential visibility signal, the practical message is straightforward: Google does not use it, and creating or maintaining one will not improve a site's presence in Search. The clarification appears in Goo...

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DEV Community • 2026-07-29 09:37

Salesforce API Testing with Playwright + TypeScript: A Practical Enterprise Guide (2026 Edition)

Modern Salesforce implementations are API-first. Lightning Web Components call Apex REST endpoints, integration middleware pushes records through the Bulk API, external systems authenticate with OAuth, and CI/CD pipelines deploy metadata through the Tooling API. If your automation strategy only clicks buttons in the UI, you are testing the thin surface of a system whose real logic lives underneath...

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DEV Community • 2026-07-29 09:37

Your OTP resend button is a race condition (and it's charging you twice)

Every product I've seen ship SMS one-time codes has the same bug on day one. It doesn't show up in staging, it shows up in the bill and in support tickets: users receive two codes, and the second one invalidates the first. Here's the sequence that causes it. The race user taps "Resend" ──▶ POST /otp/send ──▶ generate code A ──▶ provider call (slow, 900ms) user taps again ──▶ ...

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DEV Community • 2026-07-29 09:36

How to Use One OpenAI-Compatible API for Multiple AI Models

Modern AI applications rarely depend on only one model. A team might use one model for reasoning, another for fast classification, and another for multimodal tasks. But integrating every provider separately introduces duplicated work: Different authentication methods Different request and response formats Different SDKs and error structures Separate usage dashboards More code to maintain An O...

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Hacker News • 2026-07-29 09:36

Show HN: Where conscious events get found, booked and hosted

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