leelakrishna’s gists

leelakrishna / camel2underscore.scala

Created June 20, 2020 06:41 — forked from sidharthkuruvila/gist:3154845

Utility to functions to convert between camel case and underscore separated names

	/**
	* Takes a camel cased identifier name and returns an underscore separated
	* name
	*
	* Example:
	* camelToUnderscores("thisIsA1Test") == "this_is_a_1_test"
	*/
	def camelToUnderscores(name: String) = "[A-Z\\d]".r.replaceAllIn(name, {m =>
	"_" + m.group(0).toLowerCase()
	})

leelakrishna / gist:19c65427a3f8b9d07b43c64489868790

Created June 20, 2020 06:41 — forked from sidharthkuruvila/gist:3154845

Utility to functions to convert between camel case and underscore separated names

	/**
	* Takes a camel cased identifier name and returns an underscore separated
	* name
	*
	* Example:
	* camelToUnderscores("thisIsA1Test") == "this_is_a_1_test"
	*/
	def camelToUnderscores(name: String) = "[A-Z\\d]".r.replaceAllIn(name, {m =>
	"_" + m.group(0).toLowerCase()
	})

leelakrishna / punnel.py

Created May 14, 2020 03:33 — forked from shatil/punnel.py

Python OpenSSL libraries' private key signing vs. OpenSSL's rsautl

	#!/usr/bin/env python
	from __future__ import print_function


	import base64
	import sys


	PEM = ("""-----BEGIN RSA PRIVATE KEY-----
	MIIEogIBAAKCAQEAgK1Q6Ydi8UUheJLvnTYJE65NOZtAtjDdDSxS+6b4x9EakjIylljSzs5uLEJn

leelakrishna / main.go

Created August 14, 2018 04:24 — forked from EtienneR/main.go

A basic RESTful API in Go with Gorp & SQLite 3 - https://medium.com/@etiennerouzeaud/how-to-create-a-basic-restful-api-in-go-c8e032ba3181

	package main

	import (
	"github.com/gin-gonic/gin"
	"github.com/jinzhu/gorm"
	_ "github.com/mattn/go-sqlite3"
	)

	type Users struct {
	Id int `gorm:"AUTO_INCREMENT" form:"id" json:"id"`

leelakrishna / introrx.md

Created April 18, 2016 03:40 — forked from staltz/introrx.md

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

leelakrishna / stormTopologyCheck.py

Created March 25, 2016 15:39 — forked from wesfloyd/stormTopologyCheck.py

Script runs constantly at X seconds interval checking to see if topologies have stopped processing new Tuples

	# Wes Floyd April 2015

	import sys
	import requests
	import json
	import argparse
	import pprint
	import time

	pp = pprint.PrettyPrinter(indent=4)

leelakrishna / kafka_install.md

Created March 24, 2016 08:34 — forked from leommoore/kafka_install.md

Kafka - Messaging Basics

#Kafka - Messaging Basics This assumes you are starting fresh and have no existing Kafka or ZooKeeper data. See http://kafka.apache.org/documentation.html#quickstart for more details.

##Install Java

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

leelakrishna / gist:f90264365b892ef65203

Created March 22, 2016 16:40 — forked from kawamon/gist:10354308

HDFS Caching

	kawasaki@hadoop11:~$ hdfs cacheadmin -listDirectives
	Found 0 entries
	kawasaki@hadoop11:~$ hdfs cacheadmin -listDirectives stats
	Can't understand argument: stats
	kawasaki@hadoop11:~$ hdfs cacheadmin -listDirectives -stats
	Found 0 entries
	kawasaki@hadoop11:~$ hadoop fs -ls dir1
	Found 4 items
	drwxr-xr-x - kawasaki kawasaki 0 2014-04-09 06:38 dir1/a
	-rw-r--r-- 3 kawasaki kawasaki 75288655 2014-04-09 06:44 dir1/bigfile

leelakrishna / benchmark-commands.txt

Created March 22, 2016 10:47 — forked from jkreps/benchmark-commands.txt

Kafka Benchmark Commands

	Producer

	Setup
	bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1
	bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3

	Single thread, no replication

	bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196

leelakrishna / Kafka benchmarks - Confluent

Created March 22, 2016 10:44

	$ kafka-topics --zookeeper localhost:2181 --create --topic test-rep-one -partitions 6 --replication-factor 1
	Created topic "test-rep-one".

	kafka-producer-perf-test --topic test-rep-one --num-records 50000 --record-size 1000 --throughput 1000 --producer-props acks=-1 bootstrap.servers=$HOSTNAME:9092
	5000 records sent, 1000.0 records/sec (0.95 MB/sec), 4.3 ms avg latency, 222.0 max latency.
	5005 records sent, 1000.8 records/sec (0.95 MB/sec), 1.6 ms avg latency, 10.0 max latency.
	5002 records sent, 1000.2 records/sec (0.95 MB/sec), 1.4 ms avg latency, 23.0 max latency.
	5002 records sent, 1000.2 records/sec (0.95 MB/sec), 1.3 ms avg latency, 8.0 max latency.
	5001 records sent, 1000.2 records/sec (0.95 MB/sec), 1.2 ms avg latency, 6.0 max latency.
	5000 records sent, 1000.0 records/sec (0.95 MB/sec), 1.2 ms avg latency, 5.0 max latency.

LeelaKrishna K leelakrishna

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos