Matthew J. Clemente

Arrow functions have been around in CFML since Lucee 5 and Adobe ColdFusion 2018 (Update 5), respectively. Despite this, I only recently began trying to get comfortable with the syntax. I was surprised to find that, while Lucee added fat arrow support much earlier, Adobe ColdFusion provides more complete support for the syntax.

Jun 04, 2020
3 minutes

We recently ran into a puzzling issue with cfhttp and CommandBox 5. Requests to certain domains, such as, would fail with Unknown host: Received fatal alert: handshake_failure, despite the domain's SSL certificate being valid. I hope this post, which digs into the somewhat unexpected source of them problem, is helpful to anyone else who might encounter the error.

May 23, 2020
5 minutes

Building on my previous post, which covered writing a basic custom command for the CommandBox CLI, I put together another video, detailing how to pass parameters to your command.

Mar 14, 2020
1 minute

I posted a video, walking through the process of building your first CommandBox custom command. If you're not familiar with this aspect of CommandBox, I think you may be surprised how quickly you can build your own CLI commands.

Mar 02, 2020
1 minute

I'm not a database guru or SQL sherpa, but from time to time I do fill the role of de facto DBA. The following are some notes and observations from a recent, successful, migration from Microsoft SQL Server to PostgreSQL. Is it everything you need to know? Absolutely not. But there are some points and resources that will hopefully be helpful.

Feb 04, 2020
8 minutes

Hindsight being 20/20 makes the lesson of this post appear comically obvious, but as the underlying issue took a while to track down, I thought it worth documenting. The embarrassing TLDR; is that you should make sure that your Redis cache is appropriately sized for your session data or you might end up with errors that are difficult to debug.

Jan 21, 2020
3 minutes

One of the appeals of open source software is that anyone can contribute. When you encounter a problem with an open source project, beyond simply reporting the bug, you have the means of resolving it - anyone can send a PR. Having recently gone through this process with CommandBox, I thought it might be helpful to share the steps for contributing.

Dec 12, 2019
5 minutes

Well, the title feels a bit like word soup, but I think it's accurate. When I got started with Lucee, containers, and external cache providers, I blogged about using Memcached. At work, we've since shifted our stack, and now primarily use Redis for caching.

Nov 14, 2019
6 minutes

Just a quick note about generating XLSX (Excel) files with ColdFusion, which basically amounts to me regurgitating the documentation. It's a small change in code, but the reduction in spreadsheet file size can be considerable.

Oct 11, 2019
3 minutes

I had the opportunity to present two sessions at this year's Adobe ColdFusion Summit in Las Vegas - the first on Docker Swarm, the second on CFML API wrappers. While I'd given both previously, these were updated versions - there's always room for improvement and changes in this space can happen with disconcerting speed.

Oct 08, 2019
2 minutes