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@rodolfo42
rodolfo42 / Db.scala
Last active January 17, 2018 15:23
How to use transactions with finagle-mysql
package transactions
import com.twitter.finagle.exp.mysql.{Client, OK, Result}
class Db(mysqlClient: Client) {
val insertOrder = "INSERT INTO orders (ref) VALUES(?)"
val insertOrderItem = "INSERT INTO order_items (order_id, item_id) VALUES(?, ?)"
def persistOrderWithItems[T](order: Order)(whenDone: (OK, Seq[Result]) => T): Future[T] = {
@lavalamp
lavalamp / The Three Go Landmines.markdown
Last active February 28, 2025 12:54
Golang landmines

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

  1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }
@oakes
oakes / rust_for_clojurists.md
Last active July 10, 2025 04:42
Rust for Clojurists
@Alien2150
Alien2150 / gist:d0c74d99c19df59109ff
Created December 19, 2014 16:50
TLS Example with Reactive Streams
package connection
import java.net.InetSocketAddress
import java.security.{SecureRandom, KeyStore}
import javax.net.ssl.{TrustManagerFactory, KeyManagerFactory, SSLContext}
import akka.actor.Actor.Receive
import akka.stream.FlowMaterializer
import akka.stream.actor.ActorPublisherMessage.Request
import akka.stream.actor.ActorSubscriberMessage.{OnComplete, OnNext}
@gangstead
gangstead / notes.md
Last active June 6, 2023 03:36
Typesafe webinar notes: Spray & Akka HTTP - Mathias Doenitz

Typesafe webinar notes: Spray & Akka HTTP

Presenter - Mathias Doenitz

Spary.io

  • embeddable http stack built on Akka actors
  • Just an HTTP integration layer, not for building full web apps
  • Server & client side
@juliandunn
juliandunn / postgresql-on-aws-tips.md
Last active September 27, 2022 10:55
Notes on PostgreSQL performance optimization on RDS

Deep Dive: PostgreSQL on AWS

When loading data

  • disable backups (backup_retention=0)
  • disable multi-AZ and autovacuum
  • pg_dump -Fc (compressed) and pg_restore -j (parallel)
  • Increase maintenance_work_mem
@whysoserious
whysoserious / StreamingActor.scala
Created November 13, 2014 20:23
import akka.actor._
import akka.util.ByteString
import spray.http.HttpEntity.Empty
import spray.http.MediaTypes._
import spray.http._
import spray.routing.{HttpService, RequestContext, SimpleRoutingApp}
object StreamingActor {
// helper methods
@2matzzz
2matzzz / gist:89e4ad97d7fe4d1e7a34
Last active August 29, 2015 14:09

Nginx vs h2o (http/1.1)

Environment

Web Server

AWS c3.xlarge on VPC (ap-northeast-1)

LoadWorker

AWS c3.8xlarge on VPC (ap-northeast-1)

@jamii
jamii / gist:8957881c8eaa4035f4ae
Last active April 14, 2023 21:47
Inspirations for Eve
@IainHull
IainHull / OrderExampleReliable.scala
Created September 9, 2014 20:46
Port the EventSourced sample code from http://krasserm.blogspot.ie/2013/01/event-sourcing-and-external-service.html to akka-persistence.
package org.iainhull.akka
import scala.concurrent.duration._
import akka.actor._
import akka.event.Logging
import akka.pattern.ask
import akka.util.Timeout
import akka.persistence.{PersistentView, AtLeastOnceDelivery, PersistentActor}