Tag: book
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2025/07/21 [Accelerate]
Good performance measurement focuses on global outputs. Software delivery performance can be measured with following criteria:– lead time– deployment frequency– time to restore service– change fail rate Lead time – The time it takes from receiving a request from a customer to this request being satisfied. Lead time is divided into two phases. First phase…
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2025/07/20 [Accelerate]
Performance can be improved if each team focuses on their own capabilities. Improvement should be continuous, never-ending process. What is today considered high performance next year will become a baseline or even low performance. In order to improve performance, the first thing we need to do is to measure the current performance. This mean we…
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2025/07/19 [Accelerate]
Book authors conducted extensive research and recognized 24 capabilities that drive improvement. These capabilities were grouped into 5 sections: – Continuous delivery– Architecture– Product and process– Lean management and monitoring– Cultural The main thesis of the book tries to prove that software and it’s delivery is the main driver of acceleration in almost every industry,…
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2025/07/18 [Accelerate]
Accelerate is a book that I already read once but I want to give it a quick re-read but this time I will be taking notes. It is a very interesting book that shows how ease and frequency of deployments influence company performance and employee satisfaction.
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2025/06/20 [Learn Postgres]
I started the chapter about triggers and rules. Both seem to be very powerful tools. I can see how they enable for example denormalization. I am still curious about maintainability. Let’s say table A is replicated to table B. If table A changes it’s schema it should be recognised by a linter and force programmer…
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SQL/Postgres – Relations and Join Command
In a relational database, each table typically stores information about a single entity, such as ‘Student,’ ‘School,’ or ‘Teacher.’ The process of combining information stored in rows across multiple tables is achieved through a method called table join. The ANSI SQL standard defines the `JOIN … ON` command to execute table joins.
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SQL/Postgres – The Basics
I decided to take a closer look at various lower-level technologies to improve my general knowledge about programming and the web. I used to work a lot with high-level abstractions, meta-frameworks, systems, and libraries like Next.js, GCP, TypeORM, or GraphQL. They greatly increase development speed and offer a lot of functionality out of the box,…