Is Clojure faster than Java?

In principle, Clojure can be just as fast as Java: both are compiled to Java bytecode instructions, which are executed by a Java Virtual Machine Clojure code will generally run slower than equiva- lent Java code. However, with some minor adjustments, Clojure performance can usually be brought near Java performance.

Is Clojure slow?

Dynamic, functional programming languages like Clojure are sometimes considered “slower” than their statically-typed and/or OO counterparts, due to facilities like dynamic function dispatch and immutable-orientation, etc. Clojure is readily optimizable in cases where utmost performance is key.

Why is Clojure slow?

Clojure projects are slow to start not only because of JVM — JVM itself starts in ~50 ms — but because of JVM specifics the classes are loaded slowly.

How performant is Clojure?

Clojure treats code as data and has a macro system. It focuses on programming with immutable values and explicit progression-of-time constructs, which are intended to facilitate the development of more robust programs, particularly multithreaded ones. It is built with performance, pragmatism, and simplicity in mind.

Which is the best HTTP client for Clojure?

HTTP Kit is a minimalist, efficient , Ring-compatible HTTP client/server for Clojure. It uses a event-driven architecture to support highly concurrent a/synchronous web applications. Feature a unified API for WebSocket and HTTP long polling/streaming

How to create a database-backed Clojure web application?

This article will explore creating a database-backed Clojure web application. The app is called Shouter, a small Twitter clone that lets users enter in “shouts” which are stored in a PostgreSQL database and displayed on the front page of the app. You can see an example of the finished Shouter deployed to Heroku or view the finished source.

Is the destructuring in Clojure elegant or performant?

Clojure’s destructuring is elegant and generally performant, but we can get significant performance wins by avoiding it when it matters.

What does it mean to compile in Clojure dynamically?

Clojure is adamantly dynamic, which means Clojure code can compile without needing to know (or even having access to) the types of values that will flow at runtime. In the following function, x and y could take on the value of an array, map, String, or many other types that might show up dynamically: