DEV Community: saiarlen

Logmojo — High-Performance Log Management Made Simple

saiarlen — Sun, 21 Dec 2025 07:25:26 +0000

Most log management tools are powerful — but overkill.

If you’ve ever set up ELK or similar stacks just to search logs, you already know:

setup takes hours
memory usage is huge
indexing delays slow debugging
maintenance never really ends

So I built Logmojo — an open-source log management and system monitoring tool designed for developers who want speed, simplicity, and control.

👉 Docs & Demo: https://saiarlen.github.io/logmojo/

👉 GitHub Repo: https://github.com/saiarlen/logmojo

What Is Logmojo?

Logmojo is a lightweight, single-binary log management system that lets you:

🔍 search logs instantly (no ingestion or indexing)
📊 monitor CPU, memory, disk, and network in real time
⏰ create alert rules for logs and system metrics
🧰 manage services and processes from a web UI
🔐 secure access with built-in authentication

It runs with ~100MB RAM, installs in under a minute, and doesn’t require any database.

Why Traditional Log Management Is Painful

Most logging stacks assume:

logs must be indexed
a database is mandatory
complexity is unavoidable

But in reality:

logs already exist as files
grep is extremely fast
most production issues need immediate answers

Logmojo works with logs as they are, not as a pipeline wants them to be.

How Logmojo Works

Instead of shipping logs into a database:

Logmojo reads log files directly
Searches use native grep / zgrep
Supports compressed logs (.gz, .bz2, .lz4)
Metrics stream via WebSockets
Alerts trigger on log patterns or system thresholds

This means:

no ingestion delay
no data duplication
no indexing failures

What you see is what’s on disk.

Key Features

Instant Log Search

Search massive log files immediately, including archived and compressed logs.

Real-Time System Monitoring

Live and historical metrics for CPU, memory, disk, and network usage.

Rule-Based Alerts

Trigger alerts based on:

error patterns
service crashes
resource thresholds

Alerts are deduplicated and delivered via email.

Service & Process Control

Start, stop, or restart systemd services and running processes directly from the UI.

Secure by Default

JWT authentication
bcrypt password hashing
HTTP-only cookies

Clean Web UI

A modern, responsive dashboard built with TailwindCSS and DaisyUI.

When Logmojo Makes Sense

Logmojo is a great fit if you:

want fast log search without indexing
run small to medium servers
don’t want to maintain ELK or Loki
prefer Unix-style tooling
care about low operational overhead

It’s not meant to replace everything — just the parts that slow you down.

Open Source and MIT Licensed

Logmojo is fully open source under the MIT license.

You can:

self-host freely
modify and extend it
integrate it into your workflows
contribute features or fixes

If you find it useful, consider starring the repo:

https://github.com/saiarlen/logmojo

AI in Coding: What It Means for Developers

saiarlen — Sat, 15 Feb 2025 08:33:04 +0000

AI is changing how we write code, and it’s happening fast. Tools like GitHub Copilot and ChatGPT are helping developers work smarter, not harder. But what does this mean for you? Let’s break it down.

How AI is Helping Developers

Code Generation
AI can write code snippets, autocomplete lines, and even debug errors. It’s like having a coding buddy who never sleeps.

Faster Testing
AI tools can find bugs and optimize test cases, saving you time and headaches.

Natural Language Coding
Describe what you need in plain English, and AI can turn it into code. Magic? Almost.

Why Developers Still Matter

AI isn’t replacing developers—it’s making us better. Here’s how:

Focus on Creativity: Let AI handle repetitive tasks while you solve big problems.
Learn AI Tools: Tools like Copilot are becoming essential. Get comfortable with them.
Upskill: Explore AI/ML if you’re curious. It’s a hot skill right now.

Challenges to Watch

Bias in AI: AI learns from data, so watch out for biased outputs.
Ethics: Use AI responsibly. Respect privacy and be transparent.

How to Stay Ahead

Keep Learning: Stay updated with trends and tools.
Experiment: Try AI tools in your projects.
Adapt: Embrace AI as a teammate, not a threat.

AI is here to stay, and it’s making coding more exciting than ever. What’s your take on AI in development? Share your thoughts below! 👇

How JavaScript Works in the Background: Understanding Its Single-Threaded Nature and Asynchronous Operations

saiarlen — Thu, 19 Sep 2024 11:09:07 +0000

JavaScript is the backbone of the web, powering dynamic client-side functionality for billions of websites and applications. But have you ever wondered how JavaScript works its magic in the background? In this post, we'll delve into the inner workings of JavaScript's single-threaded nature and explore the concept of asynchronous programming.

What Does Single-Threaded Mean?

When we say JavaScript is "single-threaded," it means that it has a single call stack. The call stack is essentially the structure where JavaScript keeps track of the functions being executed. It follows a Last In, First Out (LIFO) order, meaning the last function pushed to the stack will be the first to finish. Here's an example of how this works:

function first() {
    console.log('First function');
}

function second() {
    console.log('Second function');
}

first();
second();

In this example, the first() function is added to the stack and executed. Once it is complete, it is popped off, and the second() function is pushed onto the stack and executed next.

While single-threaded languages may seem limited because they can only do one thing at a time, JavaScript's clever use of asynchronous mechanisms allows it to simulate multitasking.

The Event Loop and Asynchronous Execution

JavaScript uses asynchronous execution to handle operations that might take a long time to complete, such as network requests, file I/O, or timers. Despite being single-threaded, it can manage multiple tasks concurrently thanks to the event loop and callback queue.

The Event Loop

The event loop is a core concept in JavaScript's concurrency model. Its primary responsibility is to manage how JavaScript handles asynchronous code execution. Here's how it works:

Synchronous Code runs first. When JavaScript starts, it executes all the code in the global scope in a synchronous manner, line by line, using the call stack.
Asynchronous Tasks are sent to the Web APIs (like setTimeout, fetch, etc.) or Node.js APIs, where they will be processed in the background.
The Callback Queue is where asynchronous operations are placed once they are completed.
The event loop continuously checks if the call stack is empty. If the stack is empty, it takes the first item from the callback queue and pushes it onto the call stack, allowing it to be executed.

The magic of asynchronous JavaScript lies in this interaction between the event loop, call stack, and callback queue. Asynchronous operations do not block the call stack, meaning JavaScript can continue executing other code while waiting for background tasks to complete.

Example: Using `setTimeout`

Consider the following example with a setTimeout function:

console.log('Start');

setTimeout(() => {
    console.log('This runs after 2 seconds');
}, 2000);

console.log('End');

Here's what happens step by step:

JavaScript prints "Start".
The setTimeout function is called, but instead of blocking the execution for 2 seconds, it is sent to the Web API, where it runs in the background.
JavaScript prints "End", continuing its execution without waiting for setTimeout to complete.
After 2 seconds, the callback function inside setTimeout is placed in the callback queue.
The event loop checks if the call stack is empty (which it is), then pushes the callback function to the stack and executes it, printing "This runs after 2 seconds".

Promises and Async/Await

Another popular way of handling asynchronous tasks in modern JavaScript is through Promises and the async/await syntax, which helps make the code more readable by avoiding deeply nested callbacks (also known as "callback hell").

A Promise represents the eventual completion (or failure) of an asynchronous operation and its resulting value. Here’s an example:

const promise = new Promise((resolve, reject) => {
    setTimeout(() => {
        resolve('Promise resolved!');
    }, 1000);
});

promise.then(result => {
    console.log(result);  // Output after 1 second: 'Promise resolved!'
});

Instead of relying on callbacks, we can use then() to handle what happens when the promise is resolved. If we want to handle asynchronous code in a more synchronous-looking manner, we can use async/await:

async function asyncExample() {
    const result = await promise;
    console.log(result);  // Output after 1 second: 'Promise resolved!'
}

asyncExample();

This makes the code cleaner and easier to understand, allowing us to "wait" for asynchronous tasks to complete before moving to the next line of code, even though JavaScript remains non-blocking under the hood.

Key Components in JavaScript's Asynchronous Model

Call Stack: Where synchronous code is executed.
Web APIs/Node.js APIs: External environments where asynchronous tasks (like network requests) are handled.
Callback Queue: A queue where asynchronous task results wait to be pushed to the call stack for execution.
Event Loop: The system that coordinates between the call stack and the callback queue, ensuring that tasks are handled in the correct order.

Conclusion

JavaScript's single-threaded nature may seem limiting at first glance, but its asynchronous capabilities allow it to manage multiple tasks efficiently. Through mechanisms like the event loop, callback queues, and Promises, JavaScript is able to handle complex, non-blocking operations while maintaining an intuitive, synchronous-looking coding style.

The Impact of AI on the Job Market: A Double-Edged Sword

saiarlen — Mon, 05 Aug 2024 09:42:17 +0000

Artificial Intelligence (AI) is rapidly transforming industries and reshaping the job market. While it brings immense potential for innovation and efficiency, it also raises concerns about job displacement and economic inequality😢.

🤖AI: A Job Stealer or Creator?

Artificial Intelligence (AI) is changing how we live and work. It’s making our lives easier in many ways, but it’s also raising questions about the future of jobs.

😱Will AI take our jobs?

Some people worry that AI will replace humans in many jobs. This is true for jobs that involve repetitive tasks. For example, robots can now do jobs on factory lines that people used to do.

🤠But AI is also creating new jobs.

As AI grows, we need people to build, maintain, and improve AI systems. This means new jobs for programmers, data scientists, and other tech experts.

What can we do?

Learn new skills: Technology is always changing, so it's important to keep learning.
Focus on human skills: Skills like creativity, problem-solving, and teamwork will be even more important in the future.
Embrace AI: Learn how to use AI to make your work easier and better.

AI is a powerful tool that can be used for good or bad. It's up to us to make sure it's used in a way that benefits everyone.

It's essential to remember that AI is not a replacement for human ingenuity and creativity. The future of work will likely involve a collaborative relationship between humans and machines, where AI augments human capabilities rather than replacing them.

🫣What do you think about the impact of AI on jobs?

My Personal Tips for Learning Software Development in 2024

saiarlen — Sat, 20 Jul 2024 07:16:10 +0000

As a software developer, I've learned a thing or two about what it takes to succeed in this field. In this blog post, I'll share my personal tips for learning software development in 2024.

Tip #1: Start with the Basics

Before diving into the latest technologies and frameworks, make sure you have a solid grasp of the basics. This includes data structures, algorithms, and software design patterns.

Tip #2: Practice, Practice, Practice

Practice is key to learning software development. Start by building small projects, such as a to-do list app or a simple game. As you progress, move on to more complex projects that challenge you.

Tip #3: Learn by Doing

Don't just read about software development - do it. Participate in coding challenges, contribute to open-source projects, and build your own projects.

Tip #4: Stay Up-to-Date

The software development landscape is constantly changing. Stay up-to-date with the latest technologies, frameworks, and trends.

Tip #5: Join a Community

Learning software development can be lonely, but it doesn't have to be. Join online communities, attend meetups, and connect with other developers.

Tip #6: Be Patient

Learning software development takes time and effort. Don't get discouraged if you don't understand something at first. Keep practising, and you'll get there.

Tip #7: Learn from Others

Learn from other developers. Read their blogs, watch their videos, and study their code.

Tip #8: Take Breaks

Taking breaks is essential to learning software development. Take time to relax, recharge, and come back to your code with fresh eyes.

Tip #9: Learn Testing

Testing is an essential part of software development. Learn how to write unit tests, integration tests, and end-to-end tests.

Tip #10: Have Fun

Learning software development should be enjoyable. Have fun with it, and don't be afraid to try new things.

By following these tips, you'll be well on your way to becoming a skilled software developer in 2024. Happy coding! :)

JavaScript in 2024: A Look at the Future

saiarlen — Sat, 27 Apr 2024 08:15:14 +0000

JavaScript continues to evolve, bringing with it a host of new features that promise to make coding more efficient, readable, and robust. Here’s a look at some of the most exciting developments in JavaScript for 2024

ECMAScript® 2024 (ES15) Updates

The proposed features of ES2024 promise to enrich the JavaScript ecosystem and empower developers with more tools at their disposal. Here are some of the key features:

Well-formed Unicode Strings:

This feature aims to improve how JavaScript handles Unicode strings, which are essential for representing a wide range of characters from different languages and symbols. The update ensures consistent and accurate processing of these strings across different JavaScript environments.

Temporal

In response to the need for better date management in JavaScript, the Temporal proposal offers a standard global object to replace the Date object. This new feature addresses many of the issues that have caused developers much pain when working with dates in JavaScript.

Pipe Operator

The pipe operator is another exciting feature expected to land in 2024. This operator allows you to chain together functions in a more readable and functional manner.

Records and Tuples

Records and Tuples provide JavaScript with compound primitive values. Unlike objects and arrays, records and tuples are immutable and compared by value.

Regular Expressions /v flag

The /v flag for regular expressions is another anticipated feature. This flag changes the syntax and semantics of regular expressions to match the behaviour of other programming languages.

Decorators

Decorators, a feature already popular in languages like Python and Java, are finally coming to JavaScript. Decorators allow you to wrap functions and classes with additional behaviour.

Object.groupBy()

The Object.groupBy() function is a new addition that simplifies the process of grouping objects based on a specific property.

Promise.withResolvers()

Promise.withResolvers() is a new method that provides a more intuitive way to work with Promises.

Conclusion

These are just a few of the exciting new features coming to JavaScript in 2024. As the language continues to evolve, developers can look forward to more efficient, readable, and robust coding experiences. Stay tuned for more updates as we continue to unwrap the gifts of JavaScript’s evolution!

What are your favourite React libraries and tools?

saiarlen — Sat, 01 Jul 2023 07:05:20 +0000

Here are my top 10 favorite React libraries and tools These are just a few of the many React libraries and tools that currently i am using.

Material-UI: Material-UI is a popular React library that provides a suite of components that follow the Material Design guidelines. It's a great way to get started with React, as it provides a lot of pre-built components that you can use to build your application.
Redux: Redux is a state management library that helps you to manage the state of your React applications in a centralized way. It's a great way to keep your state organized and consistent, and it can help you to write more maintainable code.
React Router: React Router is a routing library that allows you to create dynamic routes in your React applications. It's a great way to create complex applications with multiple pages, and it can help you to improve the user experience of your application.
Axios: Axios is a HTTP client library that makes it easy to make HTTP requests from your React applications. It's a great way to interact with APIs, and it can help you to fetch data from the server in a reliable way.
Lodash: Lodash is a utility library that provides a number of functions that can be used to manipulate arrays, objects, and strings. It's a great way to add functionality to your React applications, and it can help you to write more concise and efficient code.
React Testing Library: React Testing Library is a testing library that makes it easy to write unit tests for your React applications. It's a great way to ensure that your applications are working correctly, and it can help you to find bugs early in the development process.
Jest: Jest is a testing framework that makes it easy to write unit tests for your JavaScript applications. It's a great way to ensure that your applications are working correctly, and it can help you to find bugs early in the development process.
Storybook: Storybook is a tool that helps you to develop and test your React components in isolation. It's a great way to see how your components look and behave, and it can help you to find bugs in your components early in the development process.
Webpack: Webpack is a bundler that helps you to package your React applications for production. It's a great way to optimize your applications for performance, and it can help you to minify and bundle your JavaScript code.
Create React App: Create React App is a CLI tool that helps you to create React applications. It's a great way to get started with React, as it provides a lot of boilerplate code that you can use to build your application.

Comment your favourite below :).
Happy coding :)

10 Funny Things About React 😄

saiarlen — Fri, 02 Jun 2023 11:18:57 +0000

React is a popular JavaScript library for building user interfaces. It's known for its declarative nature, its use of virtual DOM, and its performance. But React can also be a bit funny at times. Here are 10 funny things about React:

1. React components are like cats.

They're independent, they can be nested, and they can sometimes be a pain in the neck.

2. React state is like a bag of holding.

You can put anything in it, but it's hard to find anything when you need it.

3. React props are like a game of telephone.

What you say is not always what they hear.

4. React errors are like a box of chocolates.

You never know what you're going to get.

5. React debugging is like a game of whack-a-mole.

You fix one bug, and two more pop up.

6. React performance is like a roller coaster.

It can be great one day, and terrible the next.

7. React documentation is like a maze.

It's easy to get lost in it.

8. React community is like a family.

They're always there to help you out.

9. React is like a love-hate relationship.

You love it when it works, but you hate it when it doesn't.

10. React is like life.

It's full of challenges, but it's also full of rewards.

I hope you enjoyed them. And if you're a React developer, I hope you can laugh at yourself a little bit.

Exploring the Latest JavaScript Updates: Enhancing Web Development in 2023

saiarlen — Tue, 30 May 2023 09:45:53 +0000

JavaScript (JS) has been the backbone of interactive web development for years, empowering developers to create dynamic and engaging user experiences. With its continuously evolving ecosystem, JavaScript is no stranger to updates and enhancements. In this blog post, we will dive into some of the latest JavaScript updates that have taken the web development world by storm in 2023. These updates have brought exciting new features, improved performance, and simplified coding practices, opening up new possibilities for developers and making the web a more vibrant place.

1. ECMAScript 2023 (ES12):
ECMAScript is the standardized specification that forms the foundation of JavaScript. The latest version, ECMAScript 2023 (ES12), introduces several new features, focusing on developer productivity and code readability. One of the notable additions is the "Pipeline Operator," which simplifies code composition and makes it easier to chain multiple functions together. Additionally, ES12 introduces "Pattern Matching," a powerful tool that simplifies complex conditional logic, making code more concise and readable.

2. WebAssembly (Wasm):
WebAssembly is a binary instruction format designed to enhance web performance by allowing code execution at near-native speeds. While not specific to JavaScript, it has become an integral part of the JS ecosystem. In 2023, WebAssembly saw significant advancements, enabling developers to build high-performance web applications that rival native ones. Wasm modules can now interact seamlessly with JavaScript, opening up new avenues for optimizing performance-critical sections of web applications.

3. Optional Chaining and Nullish Coalescing:
Optional Chaining (?.) and Nullish Coalescing (??) operators were introduced in ECMAScript 2020, but their usage and adoption have gained significant momentum in 2023. Optional Chaining simplifies the process of accessing nested properties or calling methods on objects that might be null or undefined. Nullish Coalescing provides a concise way to handle default values for variables that might be null or undefined. Together, these operators improve code robustness and reduce the need for verbose null checks.

4. JavaScript Frameworks and Libraries:
JavaScript frameworks and libraries have witnessed notable updates, bringing improved performance and new capabilities. React, a popular JavaScript library for building user interfaces, introduced React 18, which focuses on concurrent rendering, enabling smoother and more responsive user experiences. Vue.js, another widely used framework, released Vue.js 3, featuring a rewritten core that offers better performance, improved TypeScript support, and enhanced reactivity.

5. Progressive Web Applications (PWAs):
Progressive Web Applications have gained tremendous popularity in recent years, and JavaScript plays a crucial role in their development. In 2023, JavaScript-powered PWAs saw advancements in offline support, background synchronization, and push notifications, enabling developers to build web applications that rival native mobile apps in terms of functionality and user experience. JavaScript frameworks and libraries provide robust tools and abstractions to simplify PWA development, further fueling their growth.

Conclusion:
The JavaScript ecosystem continues to evolve rapidly, offering developers exciting opportunities and tools to enhance their web development projects. The updates and enhancements discussed in this blog post highlight the ongoing efforts to improve performance, code readability, and developer productivity. As we move forward, it is crucial for developers to stay updated with the latest JavaScript features and practices to leverage the full potential of this versatile language. By embracing these advancements, developers can create more immersive and innovative web experiences that captivate users and push the boundaries of what the web can offer.

Becoming a software engineer is good?

saiarlen — Wed, 21 Sep 2022 13:25:02 +0000

There is never been a better time to become a software engineer. The profession allows analytical thinkers to build the products and services that shape the world. solve problems that affect millions of people, and be at the forefront of technological innovation. Coding plays a big role in software engineering, but it is only one of many core skills software engineers possess.

The profession is consistently ranked among the top in the world for its number of job openings, future job prospects, and work-life balance. Software engineers enjoy competitive salaries—an entry-level software engineer in the United States has an average salary exceeding $100,000, according to Indeed.

So, is software engineering a good path for you to follow? I wouldn’t recommend it if you can’t find a job near home and don’t feel like moving or wasting time commuting. And I wouldn’t recommend it if you don’t like computers or screens, of course. But I suggest you try it if you think you’re up for a challenge and a new world of possibilities.

Yes! There is no integer data type in JavaScript.

saiarlen — Fri, 01 Jul 2022 19:43:36 +0000

JavaScript numbers are always stored as double-precision floating-point numbers. There is no integer data type. Some newbies to JavaScript do not realize that and believe that 125 === 125.0 is false. If you are assuming number to be an integer datatype then that is exactly when mistakes related to this happen. As strange as it may seem, the following evaluates to true in Node.js

125    // one twenty five.
125.0  // same
125 === 125.0  // returns true

Those that are unfamiliar with the way JavaScript works usually mention another unexpected behavior that is easy to explain once you understand the language. Adding 0.1 to 0.2 produces 0.3000000000000000444089209850062616169452667236328125, which means that 0.1 + 0.2 is not equal to 0.3.

console.log((0.1+0.2) === 0.3) // returns false

Unfortunately, the quirks with numbers in JavaScript doesn’t end here. Even though Numbers are floating points, operators that work on integer data types are work here as well.

5 % 2 === 1 // true
5 >> 1 === 2 // true

However you no need to worry while dealing with large numbers because there are plenty of big integer libraries that implement the important mathematical operations on large precision numbers or can try the modern built-in JS object Bigint which provides a way to represent whole numbers larger than (2^53)-1.

Top 5 JavaScript Libraries for Machine Learning, Deep Learning

saiarlen — Sat, 18 Jun 2022 17:48:00 +0000

The popularity of JavaScript doesn’t need any special introduction. When it comes to machine learning, you will often hear people discussing Python or R as their choice of programming according to the GitHub. But you will be surprised to know that we now have many JavaScript libraries for machine learning that will make JavaScript developers quite happy. Here are the top 5 ML and deep learning libraries are written using JavaScript.

Hope you liked this post. Feel free to bookmark it for further reference and shower your love with the heart.

DEV Community: saiarlen

Logmojo — High-Performance Log Management Made Simple

What Is Logmojo?

Why Traditional Log Management Is Painful

How Logmojo Works

Key Features

Instant Log Search

Real-Time System Monitoring

Rule-Based Alerts

Service & Process Control

Secure by Default

Clean Web UI

When Logmojo Makes Sense

Open Source and MIT Licensed

AI in Coding: What It Means for Developers

How AI is Helping Developers

Why Developers Still Matter

Challenges to Watch

How to Stay Ahead

How JavaScript Works in the Background: Understanding Its Single-Threaded Nature and Asynchronous Operations

What Does Single-Threaded Mean?

The Event Loop and Asynchronous Execution

The Event Loop

Example: Using setTimeout

Promises and Async/Await

Key Components in JavaScript's Asynchronous Model

Conclusion

The Impact of AI on the Job Market: A Double-Edged Sword

🤖AI: A Job Stealer or Creator?

What can we do?

My Personal Tips for Learning Software Development in 2024

Tip #1: Start with the Basics

Tip #2: Practice, Practice, Practice

Tip #3: Learn by Doing

Tip #4: Stay Up-to-Date

Tip #5: Join a Community

Tip #6: Be Patient

Tip #7: Learn from Others

Tip #8: Take Breaks

Tip #9: Learn Testing

Tip #10: Have Fun

JavaScript in 2024: A Look at the Future

ECMAScript® 2024 (ES15) Updates

Well-formed Unicode Strings:

Temporal

Pipe Operator

Records and Tuples

Regular Expressions /v flag

Decorators

Object.groupBy()

Promise.withResolvers()

Conclusion

What are your favourite React libraries and tools?

10 Funny Things About React 😄

1. React components are like cats.

2. React state is like a bag of holding.

3. React props are like a game of telephone.

4. React errors are like a box of chocolates.

5. React debugging is like a game of whack-a-mole.

6. React performance is like a roller coaster.

7. React documentation is like a maze.

8. React community is like a family.

9. React is like a love-hate relationship.

10. React is like life.

Exploring the Latest JavaScript Updates: Enhancing Web Development in 2023

Becoming a software engineer is good?

Yes! There is no integer data type in JavaScript.

Top 5 JavaScript Libraries for Machine Learning, Deep Learning

Example: Using `setTimeout`