Humboldt Solutions Ltd

When an application writes a file, the data does not become permanent immediately. The write operation first moves the data into the operating system cache in RAM, where it is vulnerable to system crashes and loss of power. The second step is the transfer to the hard disk, which normally has write caching enabled. [...]

The mod_proxy_ajp module for Apache has many advantages over mod_jk for connecting a Tomcat server to an Apache front. For me, the crucial advantage was the ProxyPassReverseCookiePath directive, which allows me to map the session cookies of a Tomcat web application (other than the root application) into the root of a virtual host. Unfortunately, many [...]

I recently converted a large project to build with Maven. The project contained both C++ and Java code, and produced a web application, a standalone server application, plus a number of small command line tools. The project used a large number of open-source Java libraries, and Maven tamed these easily. The native C++ [...]

Linux machines with multiple network interfaces are unreliable as TFTP servers. This issue has been outstanding for a long time, without any resolution. The patch attached to the Debian bug fixes the problem for an old release of tftpd-hpa, but does not apply cleanly to recent releases.
Recent releases of dnsmasq contain a TFTP server which [...]

I’ve recently been introducing the Spring Framework into an existing Java application, using it to speed up adding new features, while making the existing JDBC code more maintainable. One tricky area has been time handling: the application uses an older SQL Server version, so cannot take advantage of the implementation of timestamp with time zone [...]