How Server-Sent Events Can Replace WebSockets in Next.js Apps

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Developers building real-time features in Next.js often default to WebSockets, but Server-Sent Events (SSE) offer a simpler alternative for one-way data streaming. SSE is a browser-native technology that allows servers to push updates to clients over a single HTTP connection. Unlike WebSockets, SSE requires no special protocol and works well for use cases like live feeds, notifications, and progress updates. Next.js supports SSE through its API routes or Route Handlers, making integration relatively straightforward. For applications that only need server-to-client communication, SSE can reduce complexity compared to a full WebSocket implementation.

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How Power BI Uses Data Modelling, Relationships and Joins to Handle Complex Data

Power BI is Microsoft's business analytics and data visualization platform, capable of connecting data from over 100 sources including Excel, SQL databases, and cloud services. Unlike Microsoft Excel, which struggles with large and complex datasets, Power BI is designed to process, link, and present such data efficiently through interactive dashboards. A key part of working with Power BI involves data modelling — the process of structuring and connecting tables so data can be analyzed accurately and at scale. Two primary modelling approaches exist: the flat table, which consolidates all data into a single denormalized table, and the star schema, which links a central fact table to surrounding dimension tables. The star schema is the recommended approach in Power BI due to its faster performance, simpler DAX calculations, and reduced data redundancy.

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ProgrammingDEV Community ·

64% of Leaked Credentials From 2022 Still Valid in 2026, Report Finds

A report by GitGuardian's State of Secrets Sprawl 2026 highlights a growing problem of credential exposure persisting across security tools and environments. A single API key can travel from a developer's laptop to code repositories, pipeline logs, support tickets, and teammate configs, creating multiple copies with identical access privileges. Security tools such as repo scanners, endpoint agents, and vaults each guard their own territory but no single tool tracks a credential across all the environments it touches. The report found that 28% of secrets incidents occur entirely outside code repositories, in collaboration and productivity platforms where scanners never look. Most alarmingly, over 64% of credentials found exposed in public repositories in 2022 were still active when retested in January 2026.

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ProgrammingDEV Community ·

How to Run Arduino Simulations Locally Using Wokwi and VSCode

Wokwi is a cloud-based platform for designing and simulating Arduino projects, but it can also be run locally using VSCode. The setup involves installing the Wokwi Simulator extension in VSCode, obtaining a free trial license, and setting up the Arduino CLI to compile code. Developers must compile their Arduino sketch using the CLI, which generates a build folder containing the necessary .hex firmware file. A wokwi.toml configuration file is then created to point the simulator to that compiled firmware. Once configured, the simulator launches directly in VSCode and automatically reflects code changes after each recompilation without requiring a restart.

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ProgrammingDEV Community ·

Developer Achieves 100% Lighthouse SEO Score on Next.js App With Structured Fixes

A developer optimised the SEO setup of MockData, a Next.js-based project, achieving a perfect 100 SEO score on Google Lighthouse. Key changes included centralising metadata management via a reusable helper function, setting global defaults in layout.tsx, and adding an explicit robots.ts file with clear crawler rules. A dynamic sitemap was implemented to automatically include new public resource pages, eliminating the need for manual XML maintenance. JSON-LD structured data using Schema.org types such as WebSite, Organization, and BreadcrumbList was added only where it accurately reflected page content. The developer emphasised that a perfect Lighthouse SEO score reflects technical correctness, not guaranteed Google search rankings.

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