# Guessing a window-size property

spring.ai.chat.memory.max-messages                   = 6  ->  30 messages added, 20 stored
spring.ai.chat.memory.window-size                    = 6  ->  30 messages added, 20 stored
spring.ai.chat.memory.repository.max-messages        = 6  ->  30 messages added, 20 stored

Spring Boot ignores unknown keys silently, so none of these did anything.