I’ve finally got around to learning Kotlin, a popular language best known for running on the JVM and competing with Java.
Interestingly, it is also working on “native” support for compiling to various machine-codes (eg x86, ARM). Most interestingly of all, it is working on compiling to WebAssembly for high-performance cross-platform applications.
A useful discovery I made recently: if you need a relational database for demo or testing purposes, then Postgres publishes a really convenient official Docker image. What it not immediately clear is that this image has a mechanism for running arbitrary SQL scripts on startup - which is great for defining tables.
It is therefore trivial to create an image that others (eg developers or sales) can quickly deploy, that contains not only a database server but also whatever initial schema you need.
I run my own email-server - and it is rather a complicated business. For those interested, I have recently documented my research on the topic of email validation using SPF, DKIM and DMARC - or in other words, how to block incoming spam and how to avoid having outgoing email be blocked by others.
There has recently been a strong trend towards forcing the use of a modern mobile phone for authenticating to online banking.
I’ve been rather cautious about this, and currently use a dedicated “tan generator” device which my bank reluctantly offers as an alternative. The principal problem I have with using an application on a phone as an authentication mechanism is:
a phone typically has many other apps installed on it, and
phone operating systems have security holes (eg android and iphone)
However it appears that things are improving in this area, at least with the Android mobile OS: Android’s Trusted Execution Environment, Strongbox API, and phones with embedded security chips (eg Google’s Pixel3) make rogue apps (even with root-level access) far less of a problem.
I’ve recently seen a number of articles on the internet regarding products related to hyperconvergence - but after reading them, I still had no idea what hyperconvergence was. I therefore did some research and made a few notes.