In version 6.7, the "Connections" tab in the Database properties dialog box allows you to set a new value, the Maximum Concurrent Web Processes. This parameter allows prevention of 4D Server saturation as the result of a massive number of requests. This parameter defines the maximum number of Web processes of any type: contextual or non-contextual. By default, this value is 32000. You can set the number anywhere between 10 and 32000. When the maximum number of concurrent Web processes is reached, 4D no longer creates new processes and sends the following message, "Server unavailable" (status HTTP 503 - Service Unavailable) for each new request.