web-proxy error while running: not enough memory, cache size decreased to 2 MB , restarting

web-proxy error while running: not enough memory, cache size decreased to 1 MB , restarting

web-proxy error while running: not enough memory, cache size decreased to 0 MB , restarting

Apareceu essas 3 messagens no meu log. Alguém saberia me informa qual e o problema e com resolve?

desde ja obrigado pela atenção.