Docker is a platform for packaging, distributing and running applications. It allows you to package your application together with its whole environment.
When an application comprises a handful of large components only, it's completely acceptable to give a dedicated virtual machine (VM) to each component and isolate their environments by giving each their own operating system instance.
Monolithic applications consist of components that are all tightly coupled together and have to be developed, deployed and managed as one entity. Running a monolith typically requires a small number of powerful servers that can provide enough resources for running the application.
Algorithms are instructions on how to perform a task. Not all algorithms are created equal. Some are fast, some are excruciatingly slow. Most algorithms are affected by the size of the input (typically denoted by n). The first step to improve code performance is to measure it.
One thing you learn from spending time studying China is that the Chinese state has an asymmetric advantage in much better understanding the US than the US understands China and being very good at deliberately structuring their systems and policies in a way that consistently exploits the weaknesses in how Western liberal democracies are organised.
A window is an instance of the UIWindow class and it is the topmost element of any application UI's hierarchy. It doesn't draw any visual object and can be considered as a blank container for the UI elements called views. An application must have at least one window that normally fills the entire screen.
Applications on iOS and macOS are packaged differently from applications on other platform, most notably Windows.
How do banks pay each other? When banks want to transfer money to each other, perhaps upon instruction from a customer, they don’t put bundles of banknotes in a van and drive it off to the recipient. They pay each other digitally. How does this work?
Certificate-less Registry for Electronic Share Transfer (CREST) is the United Kingdom’s securities settlement system for the holding and transfer of securities. An embedded payment system supports a delivery-versus-payment (DVP) settlement service for transactions in UK, Irish, Manx and Channel Islands securities. CREST also has links to settlement systems outside the United Kingdom to allow transactions… Continue reading Settlement & Clearing Systems in the UK
There are four main interbank payment systems in the UK: CHAPS, BACS, Faster Payments and C&CC. These were previously operated under the umbrella of the Association for Payment Clearing Services (APACS). Now run as independent companies.