Context cancelled is caused when the original request was cancelled. Most frequently, it refers to the client connection going away and therefore Nakama cancels in-flight requests (to various subsystems, including the database) to avoid performing unnecessary work.
“Context deadline exceeded” means that the request took longer to finish than allowed and the system killed the request. This could refer to the client connections, or database connections or any other subsystem.
Most of the time, this could happen when interacting with a query that is performing poorly on the database. In this case, I’d suggest checking your query and your database settings to ensure optimum performance.