He brilliantly handled the task of diagnosing and fixing the failure in the automatic price update via XML and cron. The problem was not simple: the prices in the catalog remained outdated, which directly affected sales. He quickly figured out the cause — a timeout conflict between the cron job and the processing of a large XML file from the supplier. He deeply analyzed the logs, configuration, script, and server load, after which he optimized the parser, introduced chunk processing, added a lock file to avoid task duplication, and set up a soft timeout. He conducted full testing on a stand with a real file of 150 thousand items — the update works reliably every 4 hours. He left clear comments in the code and a short instruction for the admins. Now the system works like clockwork: no failures. He didn't just fix it — he made it more reliable. I recommend him 100%. Thank you for the professional approach!