What are the differences between value receivers and pointer receivers in Go methods? When should you use each of them?
In Go, methods can be defined on both value types and pointer types. The distinction between value receivers and pointer receivers lies in how the receiver is passed to the method and how modifications to the receiver affect the original value. Let’s explore the differences and when to use each of them. 1. Value Receivers:…
Top 10 SQL Query Best Practices with Real-World Examples
SQL (Structured Query Language) is the backbone of managing and retrieving data from relational databases. Writing efficient and optimized SQL queries is crucial for maintaining good database performance and scalability. In this blog, we will explore the top 10 SQL query best practices with real-world examples to illustrate their importance and impact. 1. Use Indexes…
Dealing With ‘Too Many Connections’ Error in MySQL
As your web application or service grows in popularity, the number of concurrent connections to your MySQL database may increase significantly. While this is a positive sign of success, it can also lead to a common error in MySQL: “Too Many Connections.” This error occurs when the MySQL server reaches its maximum limit for concurrent…
MySQL: Using UNION, INTERSECT & EXCEPT
In MySQL, the UNION, INTERSECT, and EXCEPT operators are powerful tools for combining and manipulating data from multiple tables or queries. These set operators enable you to perform set operations such as combining rows, finding common elements, and subtracting sets. In this technical blog, we will explore how to use UNION, INTERSECT, and EXCEPT in…
Duplicate, Redundant and Invisible Indexes in MySQL: Explained
Indexes are a critical component of database optimization, enhancing the speed and efficiency of query execution. However, not all indexes are created equal. In MySQL, you may encounter duplicate, redundant, or even invisible indexes that can impact performance and maintenance. In this technical blog, we will delve into these types of indexes, understand their implications,…
MySQL: Multiple Column Index vs Multiple Indexes
Multiple Column Index vs Multiple Indexes with MySQL: A Comparative Analysis In MySQL, indexing is a vital technique for optimizing database performance. It allows for quicker data retrieval and improved query execution time. When it comes to indexing multiple columns in a table, you have two options: using a multiple column index or creating multiple…
MySQL: Transaction
How to Use Transactions in MySQL: Step-by-Step Guide Transactions are an essential feature of any robust database system, allowing you to group a set of database operations into a single logical unit. MySQL, one of the most popular relational database management systems, provides comprehensive support for transactions. In this step-by-step guide, we will explore how…
MySQL Index Failure
Demystifying Index Failure: Understanding All Possible Cases with Examples Introduction: Indexes are an integral part of database management systems, designed to optimize query performance and enhance overall database efficiency. However, there are situations where indexes may fail to deliver the expected performance improvements, or even lead to degraded performance. In this technical blog, we will…
What is the difference between defer and panic/recover? When and how should you use each of them?
`defer`, `panic`, and `recover` are three distinct mechanisms in Go that are used for different purposes. Let’s discuss each of them and their differences: 1. `defer`: 2. `panic`: 3. `recover`: When to use each of them: Remember that the general guideline is to use `panic` and `recover` sparingly. They are powerful mechanisms for handling exceptional…
Explain how Go interfaces are implemented internally. What is the difference between an empty interface and a typed interface?
In Go, interfaces are implemented using two main components: interface types and interface values. The Go compiler and runtime work together to manage these components. 1. Interface Types: 2. Interface Values: Now, let’s discuss the differences between an empty interface and a typed interface: 1. Empty Interface (`interface{}`): 2. Typed Interface: In summary, Go interfaces…
