Sunil Kumar Profile picture
13 Nov, 11 tweets, 3 min read
Are you a Cryptocurrency enthusiast?

Here's list of Github repositories you should check out:

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1. Bitcoin: Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority.

github.com/bitcoin/bitcoin
2. Ccxt: A JavaScript / Python / PHP cryptocurrency trading API with support for more than 120 bitcoin/altcoin exchanges

github.com/ccxt/ccxt
3. Blockchain: A simple Blockchain in Python

github.com/dvf/blockchain
4. LBRY SDK: LBRY is a decentralized peer-to-peer protocol for publishing and accessing digital content.

github.com/lbryio/lbry-sdk
5. Grin: Minimal implementation of the Mimblewimble protocol.

github.com/mimblewimble/g…
6. Lnd: The Lightning Network Daemon (lnd) - is a complete implementation of a Lightning Network node.

github.com/lightningnetwo…
7. Monero: the secure, private, untraceable cryptocurrency

github.com/monero-project…
8. Freqtrade: Freqtrade is a free and open source crypto trading bot written in Python.

github.com/freqtrade/freq…
9. Tendermint: ⟁ Tendermint Core (BFT Consensus) in Go

github.com/tendermint/ten…
10. Litecoin: Litecoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world.

github.com/litecoin-proje…

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More from @sunilc_

4 Nov
Messaging Queues are one of the critical components in building distributed & scalable applications.

Let's talk about them in this thread:

- what is it ?
- how to use it ?
- benefits of using it in an architecture.

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Queue:

As you might already know a queue is a data structure which works in first-in first-out manner.

It basically contains a sequence of objects that can be read and processed in the same order in which they were received.

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Message:

A message is any data which can be in different formats like text, json, xml etc depending your application needs.

It contains all the information that needs to be sent from sender application to the receiver application.

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Read 14 tweets
3 Nov
Top 10 Python libraries for data science:

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1. Pandas

Pandas is an open-source Python package that provides high-performance, easy-to-use data structures and data analysis tools for the labeled data in Python programming language.
2. NumPy

One of the most fundamental packages in Python, NumPy is a general-purpose array-processing package. It provides high-performance multidimensional array objects and tools to work with the arrays. NumPy is an efficient container of generic multi-dimensional data.
Read 12 tweets
2 Nov
A list of programming languages that are actively developed on GitHub:

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1. GoLang ( ⭐️78.1k )

github.com/golang/go
2. TypeScript ( ⭐️65.3k )

github.com/microsoft/Type…
Read 11 tweets
30 Oct
Micro Services Architecture Vs Monolith Architecture:

You might have heard about these terms again and again. But what are they, their advantages and disadvantages?

Let's discuss it in this thread: πŸ§΅πŸ‘‡πŸ»
Micro Services Architecture:

Micro Services is an architectural style where a single application is built as a suite of multiple smaller services which are loosely coupled, maintainable and scalable separately.

Let's discuss what that means.

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Let's take the below example:

As you can see, our example application takes care of user accounts, reading and updating inventory and shipping the products to end users.

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Read 16 tweets
29 Oct
DATABASE CONNECTION POOLING is one of the import concepts to know for every Software Developer (both front-end and back-end).

You should know how REST services are optimised using database connection pooling.

Let's discuss it in this thread πŸ§΅πŸ‘‡πŸ»
Let's say you have a backend service which has an API endpoint to read data from a database table.

This is how a naive developer would implement such an endpoint:

- open db connection
- read the data from database
- close db the connection
- return the response

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Now there's nothing wrong with implementing it this way. The end point works perfectly fine and it returns the desired results.

The problem is when you get so many concurrent requests.

Every API call is going to open a database connection and that's not good because...

πŸ‘‡πŸ»
Read 10 tweets
27 Oct
Are you a freelancer and struggling to manage your time between different projects & clients?

Here's a list of tools and resources to help you organise your work:

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1. Beagle: A tool for creating better contract proposals

producthunt.com/posts/beagle
2. Funnel: A CRM for small businesses and freelancers

producthunt.com/posts/funnel-2
Read 6 tweets

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