How a Payment Webhook Bug Left Customers Without Their Booked Zoom Sessions

·1 views

A developer building The Listening Ear, an online consultation platform, discovered a critical bug where successful payments failed to trigger Zoom meeting creation. The payment webhook was designed to sequentially handle payment verification, Zoom API calls, and appointment database records — all within a single synchronous flow. Because all downstream operations were tightly coupled to the webhook request, any slow or failed step could cause the entire process to break and prompt the payment provider to retry delivery. This retry behavior risked processing the same payment multiple times, leaving customers without their booked sessions despite being charged. Tracing the failure backwards revealed the webhook was carrying too much responsibility, making it the true root cause rather than the Zoom integration itself.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Developer pivots from Google Docs clone to build distraction-free writing app Writely

A developer initially set out to clone Google Docs but shifted direction after concluding that replicating more features would simply produce another cluttered writing tool. The resulting app, Writely, is designed as a calm writing workspace offering autosave, browser recovery, formatting tools, document export, and optional AI assistance. A key design choice is that the AI only processes text the user explicitly selects along with a specific instruction, leaving the rest of the document untouched. The project is live and the developer is actively seeking community feedback on clarity, usability, and whether the selective AI approach adds genuine value.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Top CDN Providers for Live Streaming in 2026: Key Differences Explained

A technical guide compares five leading CDN providers — CDNetworks, Akamai, Cloudflare, Fastly, and AWS — for live video delivery in 2026. CDNs improve streaming by routing viewer traffic through geographically distributed edge servers, reducing latency and preventing origin server overload during high-traffic events. CDNetworks is highlighted as a strong option for Asia-Pacific reach and ultra-low latency, while Akamai suits large-scale enterprise broadcasting. The evaluation assessed providers across six criteria: global edge network, live streaming performance, scalability, origin offload, security, and integration with protocols such as HLS, WebRTC, and CMAF. The guide concludes that no single CDN is universally best, and the right choice depends on audience location, latency needs, and deployment workflow.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

AI Multi-Agent System Completes Urban Flood Research Paper from Scratch

A researcher acting as Principal Investigator used a custom AI framework called tanaike-lab, powered by Google Gemini on the Antigravity CLI, to conduct and publish a full scientific study on urban torrential rain fluid dynamics. The resulting paper, focused on using citizen-science sensor networks for high-resolution rain prediction, was published on ESS Open Archive. The tanaike-lab system coordinates 22 AI subagents alongside tools like Model Context Protocol and Agent-to-Agent protocols to handle tasks such as numerical modeling, data processing, and manuscript drafting. The project was designed to address a core bottleneck in modern research: the operational overhead that slows down scientific output, without resorting to generic AI-generated content. The creator plans to open-source the framework once it reaches full maturity, with the goal of making virtual R&D labs accessible to the broader research community.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

12 Warning Signs Your Website May Have Been Hacked

A practical guide published on the Bug Circuit blog outlines 12 common indicators that a website may have been compromised, targeting small business owners, freelancers, and agencies running WordPress, Shopify, or small SaaS platforms. Critical red flags include browser malware warnings, Google Search Console security alerts, visitors being redirected to unrelated sites, and unknown administrator accounts appearing without authorization. High-urgency signs include unrecognized script files in the file manager, sudden site slowdowns or hosting suspensions, and an inaccessible or altered login page. Medium-level warnings cover domain emails bouncing or landing in spam, and unfamiliar spammy pages appearing in Google search results. The guide recommends treating any combination of two or more symptoms as a strong signal of a breach and advises immediate action for anything rated Critical or High.

0 comments Read more at DEV Community