Worked on the nestjs/nest repository to deliver a configurable maxBufferSize option for TCP-based messaging, addressing memory management and overflow prevention under high load. The solution involved refactoring the JsonSocket component to accept an extensible options object, updating both ClientTCP and ServerTCP to propagate the new setting, and maintaining backward compatibility with a 128MB default. Comprehensive tests were added and existing ones updated to validate the new behavior, covering scenarios like valid JSON handling and chunked data accumulation. This work, implemented in TypeScript and leveraging skills in TCP, microservices, and socket programming, enhances resilience and extensibility for production environments.