Fueling Curiosity, One Insight at a Time

At Codemancers, we believe every day is an opportunity to grow. This section is where our team shares bite-sized discoveries, technical breakthroughs and fascinating nuggets of wisdom we've stumbled upon in our work.

Apr 23, 2024
active_record_doctor performs variety of health checks to identify and rectify common database issues like missing foreign key constraints, missing NON NULL constraints, missing presence validations, incorrect presence validations on boolean columns and many more. Ref: https://github.com/gregnavis/active_record_doctor
#rails #database
sujay
sujay
Apr 22, 2024
while integrating sentry with gitlab ip whitelisting needs to be done on gitlab server (self-hosted)
#devops #sentry#gitlab
sagar.ghorse
sagar.ghorse
Apr 22, 2024
The kubectl cordon NODE_NAME command is used in Kubernetes to mark a node as unschedulable, meaning no new pods will be scheduled onto that node. Existing pods on the node will continue to run unless explicitly terminated or moved.
#devops #kubernetes
soniya.rayabagi
soniya.rayabagi
Apr 22, 2024
Debugging Kubernetes pod on helm
helm upgrade unleash-app-toggle . --debug
Adding --debug can provide more insight if the error persists, showing exactly what values are being passed to each template.
#devops #kubernetes #helm
nisanth
nisanth
Apr 19, 2024
Avoid Using Double Quotes for Environment Variables
When configuring the PostgreSQL user and database names in a Helm values.yaml file, I initially wrapped the values in double quotes. This led to a frustrating issue where I couldn’t connect to the database, receiving errors that the role did not exist. The double quotes were being interpreted literally, causing mismatches in authentication.
Solution: I removed the double quotes around the environment variables in my Helm chart and reapplied the configuration. This corrected the problem, and I was then able to connect successfully to the database.
#devops #postgres #env
nisanth
nisanth
Apr 18, 2024
create the redis cluster from existing backup we can use snapshot_name = <name of your backyp >
#devops #redis #Terraform
sagar.ghorse
sagar.ghorse
Apr 17, 2024
To find the number of pods that exist in the “dev” environment (env), you can use the
kubectl get pods --selector=env=dev
#devops #kubernetes
nisanth
nisanth
Apr 16, 2024
#nextJs #TypeScript
useEffect is a hook that allows you to perform side effects in function components.


import React, { useState, useEffect } from 'react';

function MyComponent() {
  const [count, setCount] = useState(0);

  // This effect will run only when the count state changes
  useEffect(() => {
    document.title = `You clicked ${count} times`;
  }, [count]); // Only re-runs when count changes

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

export default MyComponent;


In the above example:
• We have a component MyComponent with a state variable count and a button to increment it.
• Inside the component, we use the useEffect hook to update the document title with the current count after each render.
• We pass [count] as the second argument to useEffect, which means the effect will only run when the count state changes. This is because we want to update the document title only when the count changes, not on every render.
sachin.kabadi
Sachin Kabadi
System Analyst
Apr 16, 2024
#nextJs #TypeScript
Function Argument Deconstructing: Deconstructing function arguments can make your code cleaner and more readable.


// Before deconstruction 
const BlogPost = (props) => { 
  const { title, content, author } = props; 
  // Render blog post using props
  return (
      

{props.title}

{props.content}

Written by: {props.author}

); }; // After deconstruction const BlogPost = ({ title, content, author }) => { // Render blog post with title, content, and author return (

{title}

{content}

Written by: {author}

); };

sachin.kabadi
Sachin Kabadi
System Analyst
Apr 16, 2024
CMD-SHIFT-L is a great productivity booster for VS Code. Lets you select all instances of the current selection and edit with multiple cursors.
#VSCodetip #ProductivityHack
soniya.rayabagi
soniya.rayabagi

Showing 20 to 22 of 77 results

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