mahesh-singh

Interview Questions

Node.js

Q1: What do you mean by Asynchronous API? ☆☆

Answer: All APIs of Node.js library are aynchronous that is non-blocking. It essentially means a Node.js based server never waits for a API to return data. Server moves to next API after calling it and a notification mechanism of Events of Node.js helps server to get response from the previous API call.

Source: tutorialspoint.com

mahesh-singh

Redis offers a great deal of support for developing efficient caching mechanisms. It takes only a couple of minutes to implement a cache mechanism and get it working with any application. Follow along to learn 25 most common Redis Interview Questions and Answers for your next senior web developer interview.

Q1: What is Redis?

Topic: Redis
Difficulty: ⭐

Redis, which stands for Remote Dictionary Server, is a fast, open-source, in-memory key-value data store for use as a database, cache, message broker, and queue.

You can run atomic operations, like appending to a string; incrementing the value in a hash; pushing an element to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set.

mahesh-singh

#Study plan for week 25 Sep to 29 Sep

##Weekday

• React & Redux - 10 & 11 - 6 hrs
• fast.ai lesson - 1 - 10 hrs (This includes understanding nural network, numpy, matplotlib and pandas)
• Do a planning exercise and make some progress for StatusGater.

##Weekend

• Read and prepare notes for availablity - 5 hr
• Inlunce (chapter 1 & 2) - 3 hr

mahesh-singh

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

mahesh-singh

A lot of these are outright stolen from Edward O'Campo-Gooding's list of questions. I really like his list.

I'm having some trouble paring this down to a manageable list of questions -- I realistically want to know all of these things before starting to work at a company, but it's a lot to ask all at once. My current game plan is to pick 6 before an interview and ask those.

I'd love comments and suggestions about any of these.

I've found questions like "do you have smart people? Can I learn a lot at your company?" to be basically totally useless -- everybody will say "yeah, definitely!" and it's hard to learn anything from them. So I'm trying to make all of these questions pretty concrete -- if a team doesn't have an issue tracker, they don't have an issue tracker.

I'm also mostly not asking about principles, but the way things are -- not "do you think code review is important?", but "Does all code get reviewed?".

mahesh-singh

amqp://<User Name>:<Password>@<Host>:<Port>/<vhost>

amqp://mahesh:123456@NDI-LAP-337:5672/

mahesh-singh

/// <summary>
/// Special JsonConvert resolver that allows you to ignore properties.  See http://stackoverflow.com/a/13588192/1037948
/// </summary>
public class IgnorableSerializerContractResolver : DefaultContractResolver {
    protected readonly Dictionary<Type, HashSet<string>> Ignores;

    public IgnorableSerializerContractResolver() {
        this.Ignores = new Dictionary<Type, HashSet<string>>();
    }

mahesh-singh

//Message subscriber implementation
public  class AuditSubscriber : IMessageSubscriber
    {
        public IList<string> SubscribedRouteKeys
        {
            get {  return new List<string>() 
                    {
                          "*.inceitive.attested.*"
                    }; 
                }