March 2026 — apify/crawlee monthly summary Key features delivered: - Sitemap Discovery Performance: parallelized candidate checks for sitemap discovery using GET, ensuring slow or failing candidates no longer block overall discovery; improved throughput and responsiveness. - Download control: introduced abortDownload() in the FileDownload context to enable intentional early termination of downloads, reducing wasted bandwidth and avoiding unnecessary retries. Major bugs fixed: - Concurrency issue in sitemap discovery resolved by enabling parallel probing and collection of sitemap candidates in discoverValidSitemaps; prevents slow candidates from delaying the entire discovery cycle. - Regression coverage added for the new abort path to ensure stability of the early-abort behavior. Overall impact and accomplishments: - Faster, more reliable sitemap discovery translating to improved crawl coverage and timeliness. - More efficient resource usage (bandwidth, memory) due to early abort of unnecessary downloads. - Clear separation between intentional aborts and error-driven failures, reducing noisy retries and failure signals. Technologies/skills demonstrated: - Asynchronous/concurrent programming patterns in a large-scale crawler. - Robust stream handling and abort semantics with explicit context helpers. - Test-driven improvement and regression testing to safeguard new behavior. Business value: - Increased crawl throughput and reliability with lower resource waste, enabling faster data collection and more consistent downstream processing. Commits highlighted: - f82eb04673b6a9afd0e56dac374a2fa5c91b42e0: fix: using GET for candidate checks - sitemaps (#3464) — parallelizes candidate probing to avoid blocking. - 3b3d8f685b079dea6594758a5897ba2a3181c3ac: feat: add abortDownload context helper to FileDownload (#3528) — explicit path for early termination and regression testing.

February 2026 monthly summary focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated across apify/apify-sdk-js and apify/crawlee. The month highlighted two core improvements: targeted packaging hygiene to improve publish reliability and a stability fix for sitemap discovery in Crawlee, with traceable commits for accountability.

January 2026 highlights: Stabilized deployment workflows for Apify SDK, expanded sitemap parsing capabilities in Crawlee, and strengthened streaming reliability and progress tracking in ImpitHttpClient. These changes reduce release risk, improve data integrity, and enhance resilience to diverse server responses.