Redis provides various tools to improve efficient in-memory database usage, but misconfiguration can lead to operational challenges and performance issues. Replication buffers are memory buffers that hold data during slave synchronization with the master server, which can be limited, causing replication to restart from the beginning when the maximum is reached. To prevent this, initial configuration of the buffer according to expected changes and types of changes must take place. Redis default settings have a hard limit of 256MB and soft limit of 67MB, leading to infinite loop situations if the limits are not met, resulting in high memory usage and I/O operations. Increasing the output slave buffer size by setting both limits to 512MB can provide an immediate improvement, highlighting the importance of proper configuration.