Clojure is great. Brining together Lisp with the Java ecosystem makeand its concurrency model makes it great for building backend system, while still enabling quick changes.
One thing that I found noteworthy is that Clujure did not pickup some innovations happening at Java since like version 8, such as Invoke Dynamic in the JVM or streams.
Generally for streams, the equivalent in Clojure with sequences or transducers is much cleaner and simpler so there was not a lot of reason to want them from Clojure. However, it is important to provide interop paths to work with Java libs that make use of them.
The functional interface coercion is implemented with invokedynamic.
I remember in mechanical engineering class we would often use this for exercise sheets. On our calculator we could directly enter π and ², thus it was equally as fast to entering 10.
My friends and I all selfhost own matrix homeservers and we use it to chat.
It works reasonably well, but stil the administrative work required should not be underestimated, comparable to selfhosting e-mail.
Regarding features, matrix is promising and definitly innovative, but espacially the mobile apps don't have the same level of usability like WhatsApp or novel features like Telegram. Techsavvy friends can definitly use it, but you don't want to become a managed service provider for your broader family.
I use this ansible playbook to provision my server and related services (monitoring, bridges, ...) [0].
The bridges espacially make it fun to play around with.
I'm running bcache, with lvm/luks and xfs on top, since >5 years on my desktop and it has been stable and partition manipulations, like resizes, worked without problems, albeit the tooling is not so well supported.
I bought new a new ssd and hdd for my desktop this year and looked into running bcachefs because it offers caching as well as native encryption and cow. I also determined that it is not production ready yet for my use case, my file system is the last thing I want to beta tester of. Investigated using bcache again, but opted to use lvm caching, as it offers better tooling and saves on one layer of block devices (with luks and btrfs on top). Performance is great and partition manipulations also worked flawless.
Hopefully bcachefs gains more traction and will be ready for production use, as it combines several useful features. My current setup still feels like making compromises.
The main page of codisec [0] lists that Veles has been retired. They since have a new project, CodiLime [1], which seems like is a general technology consulting/outsourcing company.
CodiLime was the actual company, CodiSec was "brand" for various security related activities, starting with CTF competitions where we used the name first, then it was used as brand for the team that worked on Veles (we continued to take part in CTFs)
None of the CodiSec members were among the management/founders/etc of CodiLime - we were AFAIK plain employees, though one of us was in fact mber of DragonSector which is partly how CodiSec started.
I recommend looking up the Wikipedia article [0] on The Open Group, if you haven't heard of them yet. Among other things, they maintain standards such as LDAP and POSIX and also currently own the trademark for UNIX.
I'm interested in toying around with IBMs current mainframe offerings and found news articles from 2022 about IBM offering mainframs in the cloud as an experiment. I setup an IBM cloud account and looked around at th offered services, but could not find services related to mainframes. Probably need to be a premium customer.
2. Make sure you select a Geography and Data Centre which supports z/OS. I know North America > Dallas > Dallas 2 does. Whereas Europe > Frankfurt > Frankfurt 2 doesn't. I haven't checked the others.
3. Scroll down to the "Image" section and select "Change image"
4. In the popup, you should see two button-like tabs. The default is "Intel x86s architecture", the other is "IBM Z, LinuxOne s390x architecture". Make sure you pick the s390x. If you don't see s390x as an option, it is probably not supported in your selected DC, go back to step (2) above
5. Select your desired z/OS version. Currently they offer z/OS 3.1 and z/OS 2.5. Let's just go with 3.1 – select the radio button.
6. Click "Save" at the bottom of the "Select Image" dialog
7. Now the screen will reclaculate, and you'll get a quote.
Mine is, US$1,874.76 a month before the "sustained usage discount". US$1,693.06 a month afterwards. That's with very minimal CPU/storage/memory/networking/etc, you might actually need to increase those numbers to get a usable environment.
And, if you are happy paying IBM US$20K+ a year, I imagine IBM will be happy to take your money. Some IBM sales rep will probably even be calling you trying to upsell.
IBM does offer the Z Development and Test Environment which is an emulated mainframe for a normal x86 computer. It's $5,980.00 / year. It looks like there is some sort of free trial, and there was a learner's edition.
Not really. Browser developers add lots of different website-specific hacks to make sites behave better in their browser. Mozilla actually used to do this a lot, when they were originally the underdog 20+ years ago and were trying to get people to switch to the Mozilla suite (and then Firefox), when the argument against switching was often related to websites not working or rendering properly in Mozilla/Firefox that behaved properly in IE.
(Not that this is not the same thing as a website developer adding browser-specific hacks to make their site behave better/worse in a particular browser.)
