centos – Page 3 – Blog by Jay Mutkawoa (Nitin)

Out of Memory (OOM) in Linux machines

Post Author By Nitin J Mutkawoa
Post Date July 4, 2017
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Since some months I have not been posting anything on my blog. I should admit that I was really busy. Recently, a friend asked me about the Out of Memory messages in Linux. How is it generated? What are the [Read More…]

Linux System

SAR command daily tips and tricks

Post Author By Nitin J Mutkawoa
Post Date March 26, 2017
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As promised on Twitter days back, I would post some interesting tips and tricks using the SAR (System Activity Report) linux command. The sar command writes to standard output the contents of selected cumulative activity counters in the operating system. The [Read More…]

Linux Application

A simple and fast Memcache implementation on WordPress

Post Author By Nitin J Mutkawoa
Post Date September 4, 2016
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Memcache is an in-memory key-value pairs data store. The data store lives in the memory of the machine. That is why it is much faster compared to other data stores. The only thing that you can put in memcache are [Read More…]

Database Systems

Backup, Restore and work on PostgreSQL cmd line

Post Author By Nitin J Mutkawoa
Post Date March 31, 2016
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Last time, we have a look how to install and set up PostgreSQL on a CentOS machine as well as to create a database. Let’s now see some more details about backups and database restore as well as some commands [Read More…]

Database Systems Linux Application

Install, Setup and Create DB on PostgreSQL

Post Author By Nitin J Mutkawoa
Post Date March 30, 2016
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PostgreSQL is yet another open source object relational database system. Its compatible with almost all operating system including BSD, Windows and Linux. I will be using a Centos7 machine to install a PostgreSQL and set up some basics of PostgreSQL. [Read More…]

Linux System

Overlay Union Filesystems in Linux

Returning to the world of blogging after nearly a month’s hiatus, I find myself intrigued by the concept of Overlay Filesystems. This article has piqued my curiosity, and I am convinced it will offer valuable insights for my future endeavors. [Read More…]

Posted on February 18, 2024February 18, 2024 by Nitin J Mutkawoa

Uncategorized AKA Non-Tech-Stuffs

My indoor plants in Winter 2024

I used to have a cool indoor greenhouse in my living room growing lettuce, arugula, and thyme. However, since I work from home most of the time and need a dedicated office space, I decided to make some changes. I [Read More…]

Posted on January 19, 2024 by Nitin J Mutkawoa

Cloud Computing

Playing around with SSM, Tags, and Resource Group in AWS

AWS Systems Manager is a service provided by Amazon Web Services (AWS) that helps you automate and manage your infrastructure at scale. It provides a unified user interface so that you can view operational data from multiple AWS services and [Read More…]

Posted on January 18, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Smart Contracts and Tokens in Ethereum

Smart contracts in Ethereum are self-executing contracts with the terms of the agreement directly written into code. They are computer programs that run on the Ethereum blockchain and automatically enforce the rules and conditions defined within their code. If you [Read More…]

Posted on January 17, 2024January 18, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Ethereum, Solidity and Decentralization

Ethereum can be considered a technology that is more capable than Bitcoin. In a traditional Blockchain technology like Bitcoin, I mentioned how Bitcoin is mostly focused on a ledger system with records and algorithms backing up the transactions. But Ethereum [Read More…]

Posted on January 16, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Proof of Stake in Blockchain

In some of my previous articles, I wrote about the Consensus protocol. If you had been following closely, you would have come across the term several times. I explained how Consensus is a mechanism by which participants in a distributed [Read More…]

Posted on January 15, 2024 by Nitin J Mutkawoa