Author: Editorial Team
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Typical Complexities in Algorithm Analysis
When evaluating the complexity of an algorithm, you’ll frequently encounter a few common patterns. Understanding how to approximate, calculate, and represent them using Big-O notation is a crucial step in analyzing algorithm efficiency. Let’s break down the most common complexity patterns and how to handle them. 1. Arithmetic Series: This is a classic arithmetic series.…
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Understanding Big-O Notation
1. What is Notation? Notation is a symbolic way of writing mathematical expressions. Instead of writing: “The sum of one and two” We write: This symbolic representation (such as , , , , , etc.) is called mathematical notation. 2. What is Big-O Notation? Big-O notation is a way to describe how fast a function…
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Comparing Functions Mathematically
Understanding how different functions behave as input values grow is fundamental in computer science, especially in analyzing algorithm efficiency. This tutorial walks you through how to compare functions, understand their rates of growth, and use Big-O notation to describe their behavior concisely. 1. Comparing Simple Functions Let’s begin by considering two simple functions: We want…
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Understanding Best Case, Worst Case, and Comparing Algorithm Complexities
1. Why Do We Care About Best and Worst Cases? When analyzing algorithms, we need to know how long an algorithm can take to run.However, depending on the input, the runtime may vary. For example: We study both cases, but in most professional and academic contexts, we focus on the worst case — because that…
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Understanding and Evaluating Algorithm Complexity
Evaluating algorithm complexity is one of the most fundamental skills in computer science and software engineering. It’s how we determine which algorithm is more efficient — both in execution speed and in memory usage. 1. Why Do We Evaluate Complexity? Imagine you’ve solved a problem using two different algorithms. Both give correct results, but you…
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Big O Notation & Algorithm Complexity — Why It Matters and How to Understand It
Before diving into Big O notation, it’s important to understand why we study it and how it connects to real-world coding problems. 1. Why Study Big O Notation? There are three key reasons why understanding complexity analysis and Big O notation is crucial. Reason 1 — Essential for Coding Interviews In technical interviews, after solving…
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Customizing the ConcurrentMapCacheManager
1. Introduction By default, Spring Boot provides a simple in-memory cache via ConcurrentMapCacheManager.This is ideal for testing, prototyping, or small-scale applications where we don’t want to set up an external cache provider. However, we can customize its behavior to control things like: 2. Project Setup We’ll customize caching by creating a configuration class in the…
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Spring Boot Caching with Annotations – A Comprehensive Guide
1. Caching Fundamentals Caching is essentially storing frequently used data in a temporary storage location (cache) close to your application so that it can be accessed much faster compared to fetching it from a slower source such as: 1.1 Why Caching Matters 1.2 Key Caching Operations in Any Application When implementing caching in Spring Boot,…
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Using @JsonComponent in Spring Boot
What Problem Does @JsonComponent Solve? Before @JsonComponent (Manual Approach) Before Spring Boot introduced @JsonComponent, if you wanted to register a custom serializer or deserializer with Jackson, you had to manually register it with the ObjectMapper. For example: This was: After @JsonComponent (Automatic Approach) Spring Boot introduced @JsonComponent to simplify this. Now, you can: No manual…
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From @EnableGlobalMethodSecurity to @EnableMethodSecurity: A Migration Guide for Spring Security 6+
Spring Security 6, a core component of the Spring Boot 3 ecosystem, introduced a significant and welcome simplification to how method-level security is configured. The legacy annotation, @EnableGlobalMethodSecurity, has been officially deprecated in favor of the new, more streamlined @EnableMethodSecurity. This tutorial will guide you through the key differences between the two annotations and provide…