Were there any difficulties when increasing the load (50,000 operations per day)? What did the system hit?

As the load increases to 50,000 operations per day, the following bottlenecks often occur:

• Database: may not handle the number of requests, especially if there are no indexes or query optimizations.
• Network delays: increase in waiting time with a large number of parallel requests.
• Memory and CPU limitations: if servers are not scaled, the system begins to slow down.
• Locks and resource contention: for example, when working with transactions or shared resources.

Solutions typically involve caching, query optimization, horizontal scaling, asynchronous processing, and task queues.