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Karthik Krishnamurthy kkrs

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kkrs / postgresql_is_enough.md
Created February 6, 2024 14:40 — forked from cpursley/postgresql_is_enough.md
Postgres is Enough
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kkrs / latency.txt
Created February 10, 2022 21:16 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
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kkrs / tcp_flags.txt
Created December 16, 2021 18:07 — forked from tuxfight3r/tcp_flags.txt
tcpdump - reading tcp flags
##TCP FLAGS##
Unskilled Attackers Pester Real Security Folks
==============================================
TCPDUMP FLAGS
Unskilled = URG = (Not Displayed in Flag Field, Displayed elsewhere)
Attackers = ACK = (Not Displayed in Flag Field, Displayed elsewhere)
Pester = PSH = [P] (Push Data)
Real = RST = [R] (Reset Connection)
Security = SYN = [S] (Start Connection)
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kkrs / README.rst
Created April 12, 2019 03:55 — forked from dupuy/README.rst
Common markup for Markdown and reStructuredText

Markdown and reStructuredText

GitHub supports several lightweight markup languages for documentation; the most popular ones (generally, not just at GitHub) are Markdown and reStructuredText. Markdown is sometimes considered easier to use, and is often preferred when the purpose is simply to generate HTML. On the other hand, reStructuredText is more extensible and powerful, with native support (not just embedded HTML) for tables, as well as things like automatic generation of tables of contents.

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kkrs / cheatsheet.rst
Created April 6, 2019 22:01 — forked from ionelmc/cheatsheet.rst
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kkrs / SketchSystems.spec
Last active March 2, 2019 02:27
Service Configurator
Service Configurator
Basic Details*
next -> Values
Values
next -> Volumes
prev -> Basic Details
Volumes
next -> Review & Save
prev -> Values
Review & Save
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kkrs / fpmax.scala
Created October 21, 2018 23:27 — forked from jdegoes/fpmax.scala
FP to the Max — Code Examples
package fpmax
import scala.util.Try
import scala.io.StdIn.readLine
object App0 {
def main: Unit = {
println("What is your name?")
val name = readLine()
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kkrs / thread-pools.md
Created September 24, 2018 20:35 — forked from djspiewak/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.

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kkrs / Applied-FP-with-Scala.md
Created July 14, 2018 21:25 — forked from jdegoes/Applied-FP-with-Scala.md

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x
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kkrs / FrontEndServingController.scala
Created April 16, 2018 06:56 — forked from mrubin/FrontEndServingController.scala
Play controller for serving a React App out of /public - including front-end routes
package controllers
import java.io.File
import javax.inject.Inject
import play.api.Logger
import play.Environment
import play.api.mvc.{Action, AnyContent}
import play.mvc.Controller