Skip to content

Instantly share code, notes, and snippets.

💻
Think -> Code -> Solve

ShankarShastri shankarshastri

💻
Think -> Code -> Solve
Block or report user

Report or block shankarshastri

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
@shankarshastri
shankarshastri / LearnXInYMinProtocolBuffer.proto
Last active Feb 26, 2020
Self-Explanatory Protocol Buffer Lang Guide (CheatSheet)
View LearnXInYMinProtocolBuffer.proto
/*
* Self-Explanatory Protocol Buffer Lang Guide
*/
/*
* Why Protocol Buffers?
* Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data – think XML, but smaller, faster, and simpler.
* You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages.
* Protocol Buffers are Schema Of Messages. They are language agnostic.
@davideicardi
davideicardi / README.md
Last active Mar 28, 2020
Write and read Avro records from bytes array
View README.md

Avro serialization

There are 4 possible serialization format when using avro:

@Daenyth
Daenyth / Pull.md
Last active Jan 17, 2020
Designing an fs2 `Pull` from scratch
View Pull.md

The problem

I have some data which has adjacent entries that I want to group together and perform actions on. I know roughly that fs2.Pull can be used to "step" through a stream and do more complicated logic than the built in combinators allow. I don't know how to write one though!

In the end we should have something like

def combineAdjacent[F[_], A](
    shouldCombine: (A, A) => Boolean,
@Daenyth
Daenyth / MonadAndFs2Ops.md
Last active Feb 16, 2020
Cheat sheet for common cats monad and fs2 operation shapes
View MonadAndFs2Ops.md
Operation Input Result Notes
map F[A] , A => B F[B] Functor
apply F[A] , F[A => B] F[B] Applicative
(fa, fb, ...).mapN (F[A], F[B], ...) , (A, B, ...) => C F[C] Applicative
(fa, fb, ...).tupled (F[A], F[B], ...) F[(A, B, ...)] Applicative
flatMap F[A] , A => F[B] F[B] Monad
traverse F[A] , A => G[B] G[F[A]] Traversable; fa.traverse(f) == fa.map(f).sequence; "foreach with effects"
sequence F[G[A]] G[F[A]] Same as fga.traverse(identity)
attempt F[A] F[Either[E, A]] Given ApplicativeError[F, E]
@marwei
marwei / how_to_reset_kafka_consumer_group_offset.md
Created Nov 9, 2017
How to Reset Kafka Consumer Group Offset
View how_to_reset_kafka_consumer_group_offset.md

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

  1. List the topics to which the group is subscribed
kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

  1. Reset the consumer offset for a topic (preview)
View thread-pools.md

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

  1. CPU-bound
  2. Blocking IO
  3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

View ClusterRouting.scala
import akka.actor.{Actor, ActorLogging, ActorRef, ActorSystem, Props}
import akka.cluster.{Cluster, MemberStatus}
import akka.routing.FromConfig
import com.typesafe.config.ConfigFactory
object ClusterRouting extends App {
class EchoActor extends Actor with ActorLogging {
log.info("Started")
def receive = {
@raviwu
raviwu / notes_soft_skills.md
Last active Dec 11, 2019
[Notes] Soft Skills: The software developer's life manual
View notes_soft_skills.md

Page 47

This kind of mindset is crucial to managing your career, because when you start to think of yourself as a business, you start to make good business decisions.

Page 52

Every step you take without a clear direction is a wasted step. Don’t randomly walk through life without a purpose for your career.

Your big goal should be something not too specific, but clear enough that you can know if you’re steering toward it or not. Think about what you want to ultimately do with your career.

anonymous
anonymous / index.html
Created Dec 11, 2016
React Hello World w/ JSBin // source http://jsbin.com/jagegofona
View index.html
<!DOCTYPE html>
<html>
<head>
<script src="http://fb.me/react-0.13.1.js"></script>
<meta charset="utf-8">
<title>React Hello World w/ JSBin</title>
</head>
<body>
<div id="react_example"></div>
<script id="jsbin-javascript">
You can’t perform that action at this time.