Oct 7, 2025 · 1 min read · We had a requirement where we needed a message broker (AQMP) so we tried to compare Apache Kafka, RabbitMQ, and LavinMQ. We found out that LavinMQ is damn fast even on a 1GB RAM Ubuntu server. we could send/receive messages in lakhs. This speed of La...
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Jan 27, 2024 · 5 min read · A block is the same thing as a method, but it does not belong to an object. Blocks are called closures in other programming languages. There are some important points about Blocks in crystal: Block can accept arguments and returns a value. ...
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Jan 13, 2024 · 1 min read · The initialize method is useful when we want to initialize some class variables at the time of object creation. The initialize method is part of the object-creation process in Crystal and it allows us to set the initial values for an object. Below ar...
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Jan 4, 2024 · 4 min read · The word iterate means doing one thing multiple times and that is what iterators do. Sometimes iterators are termed as the custom loops. “Iterators” is the object-oriented concept in crystal. In more simple words, iterators are the methods w...
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Dec 28, 2023 · 3 min read · In crystal lang, static members are known as class variables. These variables are shared among all instances of a class and are declared using the @@ symbol. Class variables retain their value across different instances of the class and can be access...
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Dec 26, 2023 · 2 min read · In CrystalLang, a lambda is a type of anonymous function or a block of code that can be assigned to a variable or used inline. It encapsulates control flow, parameters, and local variables into a single package. lambda_variable = ->(param) { p...
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Dec 24, 2023 · 3 min read · In Crystal, one does not have anything like the variable types as there is in other programming languages. Every variable is an “object” which can be individually modified. One can easily add methods and functions on every object. So here, the Object...
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Dec 23, 2023 · 2 min read · Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates. In a different way, encapsulation is a protective shield that prevents the data from being accessed by ...
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Feb 11, 2021 · 7 min read · EDIT: It's now 1.5 years since I wrote this post, and I forgot to update it: most of the problems discussed below are gone! The application is compiling and running smoothly in ---release mode. The customer is still happy, everything is working perfe...
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