How a Free Server Timeout Bug Caused a Webhook to Fire Twice and Duplicate Data

·2 views

A developer building a webhook-based summarizer on a free server and free AI model discovered duplicate database entries for the same event the morning after deployment. Investigation revealed that the free server's gateway was dropping connections after roughly 10 seconds, while the AI model call took about 11 seconds on a cold start. Because the handler processed requests synchronously, the database write completed but the success response never reached the sender, which then retried the request as designed. The duplicate rows with differing summaries initially suggested a model error, but matching event IDs and a 48-second gap between entries pointed to a retry window instead. The developer resolved the issue by implementing an idempotency fix to prevent duplicate processing when the same event is received more than once.

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)

FlashAlpha vs Bloomberg Terminal: Which Tool Actually Serves Options Quants?

A comparison of Bloomberg Terminal and FlashAlpha highlights key differences in how each platform serves systematic options research. Bloomberg Terminal, priced at roughly $32,000 per seat annually, offers broad asset class coverage but restricts programmatic access through undisclosed usage quotas that can bottleneck large-scale data pipelines. FlashAlpha, built specifically for US equity and ETF options analytics, offers a REST and WebSocket API with published rate limits, point-in-time historical replay, and a permanent free tier starting at no cost. The article's author, who built FlashAlpha, argues that Bloomberg's BLPAPI is designed for incidental human data pulls rather than systematic research workflows involving thousands of options contracts. The core takeaway is that the two tools are not direct substitutes — most institutional desks use both, but Bloomberg alone often falls short for high-volume, model-driven options analytics.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Developer Launches Flutter Auditor Package for Quick Project Health Analysis

A developer has released a Flutter package called flutter_auditor, designed to assess the overall health of Flutter projects. The tool performs its analysis within seconds, giving developers a snapshot of their project's condition. It is now available for the Flutter community to try out. The creator is actively seeking user feedback to guide future improvements to the package.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Ethereum Delays Native AA, ERC-4337 Reviewed, Poseidon Hash Dropped

At All Core Developers Execution Call #243, a decision on including native account abstraction in the Hegotá upgrade was postponed after Layer 2 networks Base and Arbitrum raised concerns about ecosystem fragmentation if L1 and L2s adopt divergent account models. ZeroDev's CTO published a three-part retrospective on ERC-4337, concluding the standard succeeded as a rail for gasless and embedded transactions but fell short of the mass consumer-wallet migration many had anticipated, with sponsored transactions dominating its roughly 1.2 billion UserOperations. Builders in the AA Mafia group have been debating the slow pace of EOA migration, with the retrospective arguing the real breakthrough lies in in-place credential replacement rather than full account switching. Separately, the Ethereum Foundation opted to drop the Poseidon hash function in favor of standard hashes as part of its post-quantum security planning.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Developer Uses Three-Role AI Loop to Clear 41-Task Backlog in One Week

A software developer processed a 41-task backlog across two code repositories in one week by building an AI-assisted workflow divided into three roles: a judge, a builder, and a human reviewer. The judge role, powered by a stronger AI model, re-evaluated each task for relevance before any implementation began, preventing code from being written on outdated or invalid premises. By the end of the first full day of operation, open tasks dropped from 41 to 22, with 27 tasks closed and 13 branches merged. Notably, several tasks were resolved without writing any code at all, as the judgment pass alone identified work that was no longer necessary. The developer concluded that the primary bottleneck in AI-assisted task automation is not coding capacity but the judgment layer that must precede it.

0 comments Read more at DEV Community