perl Migrating To async/await (part 3) Things to consider when rewriting code to use the new async/await syntax provided by Future::AsyncAwait. In part 2 we looked at how to rewrite code using Future::Utils::repeat, into using the neater async/await syntax provided by Future::AsyncAwait. Now we'll
perl Migrating To async/await (part 2) Things to consider when rewriting code to use the new async/await syntax provided by Future::AsyncAwait. In part 1 we looked at how to rewrite code that previously used plain Future on its own for sequencing operations, into using the neater async/await
perl Migrating To async/await (part 1) Things to consider when rewriting code to use the new async/await syntax provided by Future::AsyncAwait. The Future class provides basic asynchronous future functionality, and also a number of handy building-blocks for building larger code structures into meaningful programs. With the addition of
Future Awaiting The Future (part 2) A further look at Future::AsyncAwait, where it will go next and how we should be using it. In the previous part, I introduced the Future::AsyncAwait module, which adds the async and await pair of keywords. These help us to write many forms
Future Awaiting The Future (part 1) Overview of a new syntax module for managing Future-based code IntroductionAt Binary, we have an increasing amount of code that uses Futures to represent asynchronous operations. The power of these objects comes with the increased complexity of writing readable code that makes use of
Devel::MAT Differential Memory Leak Analysis with Devel::MAT A look at a slow memory growth case and how recently-added features in Devel::MAT version 0.38 can help get to the bottom of it. Slow Growth Over Time Given a process that grows a small amount of memory over time, it can
perl Perl improvements - going from 5.14 to 5.24 Many things changed between Perl 5.14 to 5.24. Here's a brief overview of what to expect.
perl A Catchy Way to Handle Failure (part 1) A two-part look at failure handling in Perl Lets face it - failures sometimes happen. However well-laid our plans might be, there are times when the universe conspires against us, and we don't achieve the desired result. This is just as true for the
perl Unit Testing Asynchronous Code How writing asynchronous code using Futures can help simplify unit testing Well-tested code is always prefered over something that has no tests, as with more tests we can be more confident that the code actually does what we want it to. Within the realm
KVM Virtualisation in Debian 9 (Stretch) Install KVM in Debian 9 Installing the KVM packages sudo apt install -y qemu-kvm libvirt0 virt-manager bridge-utils Reboot system sudo reboot Add user to libvirt group so user can run commands sudo gpasswd libvirt -a najibul Create ISO Directory $ sudo mkdir /var/lib/libvirt/
perl Future Caching Tricks Caching the results of Future-returning functions Often when making read requests or queries to some external service, it is helpful to cache the results of these queries so that other requests for the same information can use that directly, rather than having to repeat
perl One Thing At A Time Limiting Concurrency in Future-based Programming Sometimes a Future-based program needs to actively avoid concurrency in one specific way or area, and ensure that only one instance of a given operation is outstanding at any one time. While the program as a whole can make
Parallel query without parallel query One of the key improvements in Postgres 9.6 has been the ability to distribute a query to multiple worker processes. Yet, with a few tricks this has been feasible almost forever at least for the really heavy stuff. I prefer to keep the
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perl A Sense of Closure A discussion came up the other day on the subject of how best to structure a certain piece of code, involving an IO::Async timer. The code in question was
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PostgreSQL: How to use EXPLAIN output in SQL? Sometimes you want to process the EXPLAIN output in SQL. Unfortunately, EXPLAIN itself does not offer that option. However, there are tricks... Wrapping EXPLAIN in a function This is probably
Devel::MAT Tracing Perl memory leaks with Devel::MAT, part 2 In the previous article we took a first look at how to use Devel::MAT to help find the reason why a perl process kept using more and more memory.
Devel::MAT Tracing Perl memory leaks with Devel::MAT, part 1 The `Devel::MAT` ecosystem allows developers of perl programs to inspect and analyse memory-related problems such as memory leaks, unexpected memory consumption, or odd state.
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