SymfonyDay Montreal 2026: The Hidden Cost of return new Response() (Symfony Blog)

SymfonyDay Montreal 2026 is scheduled for June 4 at L'Espace Quartier Latin (UQAM). A highlighted talk by Mathias Arlaud, Co-Founder of baksla.sh, will cover the performance costs of buffering entire responses in Symfony applications. The talk explores alternatives like StreamedResponse, incremental JSON encoding, iterable data sources, and Server-Sent Events to keep memory usage flat and improve time-to-first-byte. Registration is open with limited seats.