An SSL/TLS handshake requires at least 10 times more processing power on a server than on the client. SSL renegotiation attacks can readily take advantage of this asymmetric workload. Watch this video to learn how to easily mitigate these attacks.
Coghead shines with an Adobe Flex-based GUI for creating database-driven applications on the Web. The interface is very clean, the setup time is very fast, and minimal ASCII-based coding is required. Anyone can whip up a Web application by dragging and dropping some form widgets onto pages. The post-relational database avoids some of the table proliferation of traditional SQL, and there's a nice, open API for integration.