SShortSingh.
TopTechnologyAI & MLStartupsProgrammingScienceBusinessFinanceCrypto & Web3World

Programming

LatestTopDiscussed
0
ProgrammingDEV Community ·

Developer fixes hidden UX flaw that drove 80% of users away before first run

A developer noticed a sharp drop-off in usage for one of their Apify data-fetching tools, where only 1 in 5 users who opened the input page actually ran the actor. The culprit turned out to be a raw JSON textarea field requiring users to manually enter a structured array of objects — an unintuitive barrier for casual users. The fix involved adding simple, flat individual input fields that internally map to the existing array format, making the tool accessible without breaking advanced multi-item functionality. After spotting the pattern in one tool, the developer audited their entire portfolio and found four more actors with the same issue, applying the same fix across all of them. The incident highlighted that UX friction invisible in code reviews can only be detected by analyzing where real users abandon a product.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Proxmox VE Auth Bypass Flaw Exposes Tens of Thousands of Instances Online

A critical authentication bypass vulnerability, tracked as PSA-2026-00043-1, affects Proxmox Virtual Environment versions 7.x through 8.0.3, allowing attackers to gain passwordless root access by exploiting a flaw in the tfa-challenge parameter handling. Internet scans using application fingerprints identified roughly 34,000 to 400,000 Proxmox instances publicly reachable online, depending on the query method used. Security researchers cautioned that a raw port 8006 count of over four million is misleading, as it reflects all services on that port rather than confirmed Proxmox deployments. One affected version branch lacks a vendor patch, meaning some exposed systems cannot be fully remediated through upgrades alone. Administrators are advised to enable two-factor authentication on all accounts, restrict public access to port 8006, and audit logs for unauthorized root logins.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Developer shares key lessons from 22-day hands-on AI systems building sprint

A software developer documented a 22-day self-directed learning sprint focused on building practical AI systems, covering topics from LLM fundamentals to retrieval-augmented generation (RAG) and automated evaluation. The experiment corrected several common misconceptions, including the true purpose of RAG — retrieving relevant facts at request time rather than serving as a privacy tool — and clarified how embeddings differ from next-token prediction mechanisms. Using tools like Ollama and local models, the developer demonstrated that LLMs are stateless by design, with apparent memory in chat apps being the result of deliberate state management by the application layer. Tokenization tests revealed that prompt costs and latency vary significantly by language, with Hindi requiring roughly 2.5 times more tokens per word than English. The overall takeaway was that a useful AI feature requires the same engineering discipline as any production software: defined inputs, constrained behavior, observability, and measurable evaluation criteria.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Engineer Uses Azure Policy and Custom RBAC to Block Unauthorized Cloud VM Deployments

A DevSecOps engineer has detailed how they implemented automated guardrails on Microsoft Azure to prevent unexpected cloud cost spikes caused by human error. Using Azure Policy and custom RBAC least-privilege roles, they configured the Azure Resource Manager API to automatically intercept and deny any virtual machine deployment requests that fall outside a pre-approved list of low-cost B-Series SKUs. The policy was deployed via Azure CLI to a sandbox resource group in the Southeast Asia region, blocking higher-cost SKU families such as D-Series nodes at the point of request. To further tighten access controls, a custom VM Restart Operator role was created, restricting user permissions strictly to visibility and reboot actions while sealing off write, configuration, and deletion capabilities. The approach shifts cloud cost governance from reactive cleanup and policy handbooks to proactive, programmatic enforcement at the infrastructure level.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Audioproxy Gem Enables On-Demand Audio Transcoding in Rails Without Background Jobs

A Ruby gem called Audioproxy allows Rails developers to generate signed, cached audio preview URLs directly from Active Storage attachments without needing a job queue. The tool encodes format options, bitrate, and source URI into a signed URL path, with the first page load triggering transcoding and all subsequent requests served from a variant cache. It supports a range of processing options including trimming, fading, normalization, and expiry, all baked into the signed URL. Waveform peak data can also be generated as a format type, ensuring the visual waveform always matches the processed audio variant. The gem raises descriptive errors for unattached files or unknown options, reducing the risk of silent failures in production.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Developer traces HP laptop mute LED bug from Reddit hack to upstream kernel fix

A software developer discovered that the mute LED on their HP Omen 16-wd0xxx laptop failed to illuminate under Linux, despite audio muting correctly and the LED working normally on Windows. Initial investigation using evtest and /sys/class/leds/ ruled out hardware failure and pointed to a missing driver-level signal. A Reddit workaround involving direct hex writes to Realtek ALC245 codec registers resolved the symptom, but the developer found the approach unsatisfying for a problem likely already solved upstream. By cross-referencing the laptop's PCI subsystem ID against entries in the kernel's alc269.c quirk table, they identified and verified the correct fixup — ALC245_FIXUP_HP_MUTE_LED_V1_COEFBIT — through manual codec register testing. The fix was subsequently merged upstream and later proved useful in diagnosing the identical bug on a different user's laptop.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

How Diffusion Models Turn Noise Back Into Data Using Reverse Learning

Diffusion models generate data by first defining a forward process that gradually corrupts real samples with Gaussian noise over many steps until only pure noise remains. This stepwise corruption simplifies the complex original data distribution into a manageable Gaussian endpoint, making it easier to work with mathematically. The model then learns a reverse diffusion process, training probabilistic transitions that move from noisy states back toward clean, structured data. During generation, the model starts from random Gaussian noise and repeatedly applies these learned reverse steps to produce realistic outputs. The key distinction is that while the forward corruption process is mathematically defined, the reverse generative process must be learned entirely from data.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Wontopos Offers Long-Term Memory API for AI Agents With No LLM Data Exposure

Wontopos is a company building WOS, a memory API designed to give AI agents persistent, long-term memory by storing user data and recalling only relevant entries per query. Developers can integrate it via SDK for custom control, or use an MCP connector with zero code for tools like Claude, Cursor, and Gemini CLI. A key design principle is cost stability: retrieval returns a fixed, bounded set regardless of how large the memory store grows over time. The system never runs an LLM over stored memories, and supports multilingual storage and querying without language restrictions. Four model variants are currently live — two Tablet and two Scroll versions — with a fifth, Book, still in development.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Why Offline-First Architecture Should Be a Design Decision, Not an Afterthought

A developer building Aafiyat, a clinic management system, argues that offline-first architecture should be planned from the start rather than bolted on later. Unlike online-first apps that cache data and wait for reconnection, offline-first apps write data locally first and sync with the cloud only when connectivity is restored. Aafiyat uses Electron and SQLite to store patient records, prescriptions, and billing data locally, queuing changes for synchronization with Supabase once the network returns. The developer is applying the same principle to Nankana Home Care, a PWA for medical assistants using IndexedDB for local storage. While acknowledging challenges like conflict resolution and partial sync failures, the author contends that apps serving clinics, field workers, or areas with unreliable connectivity cannot afford to treat offline use as an edge case.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Understanding LINQ Deferred Execution: Why Your Query Runs Later Than You Think

LINQ queries in C# do not execute at the point of declaration; instead, they store a recipe for retrieval that only runs when iterated via methods like foreach, ToList(), or Count(). Because queries evaluate against the live data source each time they are enumerated, modifying the underlying collection between enumerations will affect the results. This behavior can cause serious performance issues, such as triggering multiple database calls from a single query variable used in different places. Developers can avoid redundant executions by materializing results early using ToList(), ToArray(), or ToDictionary(), which store a fixed snapshot in memory. Deferred execution is a deliberate design rooted in functional programming's lazy evaluation concept, introduced to C# when LINQ launched in 2007, and it offers real benefits when composing dynamic queries before a single database call is made.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

CISA gives federal agencies 3 days to patch two critical Cisco zero-days under active exploit

CISA added two critical Cisco vulnerabilities to its Known Exploited Vulnerabilities catalog within the same week in September, setting patch deadlines of just three days for U.S. federal agencies. The first flaw, CVE-2026-76461, is a root-level remote code execution bug in Cisco Secure Email Gateway triggered by a malicious email requiring no authentication or user interaction. The second, CVE-2026-76460, is an authentication bypass in Cisco Identity Services Engine with a perfect CVSS score of 10.0, affecting the system that controls network access permissions. Both vulnerabilities were already being actively exploited in the wild at the time CISA issued its advisories. Security experts warn that patching alone is insufficient, as attackers may have already planted persistent backdoors on compromised systems before patches are applied.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Why AI Agent Retry Logic Is Really an Event-Driven Architecture Problem

Synchronous call chains in multi-service backends appear reliable during demos but break down under real production load, as tail latency compounds across each service hop. When one downstream service slows or fails, the entire chain stalls — even services that completed their work correctly are blocked. Introducing a message queue decouples services so each can process events independently, preventing one slow component from backpressuring the rest. However, queues introduce their own challenges: at-least-once delivery semantics, duplicate messages, ordering guarantees, and poison message handling. The author argues these same distributed-systems problems resurface in AI agent pipelines that execute sequential tool calls, making retry logic a queueing problem in disguise.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Five Chrome Weather Extensions Compared by What They Actually Prioritize

A hands-on comparison of five Chrome weather extensions — Weather, UV Weather, Weatherly, Forecastfox, and SkyFeels — finds that each targets a distinct use case rather than competing directly. The Weather extension focuses on keeping a simple temperature reading in the toolbar with deeper detail one click away, while UV Weather packs in comprehensive data including UV index, AQI, radar, and long-range forecasts. Weatherly differentiates itself by being free, ad-free, and privacy-focused, whereas Forecastfox offers a straightforward traditional forecast experience. SkyFeels emphasizes toolbar customization, allowing users to display temperature, UV, or AQI alongside visual personalization options.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Apache SeaTunnel detects Kafka partition expansion in real time without job restart

Apache SeaTunnel streaming jobs, by default, do not consume data from newly added Kafka topic partitions unless the job is restarted, risking data loss or duplicate records. To address this, SeaTunnel provides the partition-discovery.interval-millis parameter, which periodically scans Kafka for new partitions and adds them to the consumer automatically. In a demonstration using SeaTunnel 2.3.12, a Kafka topic named 'ksource' was expanded from 2 to 4 partitions while a streaming job was running. With partition-discovery.interval-millis set to 5000 milliseconds, the job detected the new partitions within seconds and began consuming messages from them without interruption. This approach eliminates the need for a job restart and avoids the associated risks of downtime, missed data, or replayed historical records.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Why Web Performance Is Just as Critical as Website Functionality

A website can be fully functional yet still deliver a poor user experience if it loads slowly or responds sluggishly, according to a web development explainer published on DEV Community. Web performance encompasses how quickly and efficiently a site loads, responds, and behaves across different devices and network conditions. Developers are urged to treat performance as an integral part of the build process rather than an afterthought, addressing factors such as page speed, mobile-friendliness, and efficient resource usage. Common culprits behind slow websites include oversized images, unnecessary scripts, and bloated code, all of which can be mitigated through techniques like image compression and caching. The core argument is that a truly good website must be both fully functional and performant to meet real-world user expectations.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Apache Lakehouse Projects Hit Release Snags Over Licenses, Specs, and Engine Gaps

During the week of September 9–17, 2026, several Apache data lakehouse projects encountered release setbacks, with Iceberg Rust 0.11.0 failing two release votes, Polaris 1.8.0 receiving a blocking objection, and the Polaris Catalog Migrator requiring a second release candidate. The failures stemmed not from faulty code but from licensing oversights, a publishing error, and inconsistent encryption enforcement across engines. In a notable structural change, both the Apache Iceberg and Apache DataFusion communities voted unanimously to move the iceberg-datafusion integration crate into a new repository under the DataFusion project, aiming to align code ownership with the contributors most familiar with the engine. The move was designed to ensure that DataFusion experts maintain the integration layer while Iceberg development stays focused on the table format itself. Elsewhere, Apache Arrow shipped a Rust release introducing ALP floating-point encoding into a production Parquet implementation for the first time, and projects including Parquet, Polaris, and Apache Ossie debated how to handle cross-engine compatibility and configuration boundaries.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

ReelGeek turns photos into watermark-free vertical videos using Python tools

A developer has released ReelGeek, a free, open-source desktop tool that converts folders of photos into 1080x1920 vertical videos without watermarks, length caps, or subscriptions. The app supports Ken Burns-style panning, crossfade transitions, and background music, targeting social media reel formats. It is built using Python Pillow for image processing, numpy for frame transforms and blending, and ffmpeg for final encoding. The developer chose numpy array operations over frame-by-frame Pillow rendering to keep performance acceptable on standard laptops. The project is available on GitHub, with the developer noting the installer is not yet code-signed and inviting community feedback on additional style options.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

OpenSpec Lacks Rejected Proposal Memory, Causing AI Agents to Repeat Bad Ideas

OpenSpec, a spec-management tool used in software development, has no built-in mechanism to record why a proposed architectural change was rejected, leaving agents free to re-propose the same ideas repeatedly. Its existing archive command, /opsx:archive, was designed only to log shipped changes, not abandoned or rejected ones, meaning rejected proposals look identical to completed ones in the archive. This gap is especially problematic in legacy codebases with few contributors, where AI agents periodically revisit the same structural questions such as merging services or sharing persistence layers. The issue was raised directly with OpenSpec's maintainers as a feature request, and the project's own documentation acknowledges that rejection handling falls outside the tool's enforced scope. A practical workaround involves using the --skip-specs flag when archiving rejected changes and adopting a lightweight decision.md convention to preserve the reasoning behind past rejections.

0 comments Read more at DEV Community
0
ProgrammingDEV Community ·

Why Node.js background workers should combine events and polling, not rely on one

Using setInterval for Node.js background jobs creates two hidden problems: it fires on a fixed schedule regardless of how long each run takes, causing overlapping executions that can exhaust database connection pools, and it issues thousands of idle queries daily even when there is no work to do. Chaining setTimeout from the end of each work cycle eliminates overlap by making the delay a gap between runs rather than a fixed clock. Event-driven mechanisms like Postgres LISTEN/NOTIFY or Redis pub/sub remove idle query costs and reduce job latency from seconds to milliseconds, but they offer no delivery guarantee — a missed notification means a job silently never runs. The recommended pattern combines both approaches: events handle the fast path while a slow poll, running perhaps once a minute, acts as a safety net to catch anything the event missed. This hybrid gives low latency on healthy days while preserving the reliability guarantee that pure event-driven systems lack.

0 comments Read more at DEV Community
← NewerPage 1152 of 3222Older →