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@groundwater
groundwater / asynchbase.scala
Created April 20, 2012 17:47
Demo Adapting asynchbase to Scala
package ca.underflow.hbase
import org.hbase.async._
import com.stumbleupon.async._
object Demo extends App {
// This let's us pass inline functions to the deferred
// object returned by most asynchbase methods
@yukim
yukim / re.md
Created March 4, 2013 23:05
RE:cassandraを運用していて困っていること

@oranie さんのブログ記事への返信です。 たいへん遅くなりました。申し訳ないです。

repairとcompactionのコストが高すぎる

Cassandraにノードを追加する(Bootstrap)と、そのノードが担当するレプリカのデータを他のノードから取得します。 Repairはノードが保持するレプリカの整合性を検証して修復します。

どちらもデータを他のノードから取得しますが、ファイルを1つづつやり取りするため時間がかかるのは事実です。 この部分にまだまだ改善の余地があります。次のメジャーバージョンで抜本的に見直します

@jboner
jboner / BloomFilter.scala
Created August 7, 2013 13:47
Bloom filter in Scala taken from Twitter's Algebird project.
/*
Copyright 2012 Twitter, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
@jboner
jboner / akka-cluster-implementation-notes.md
Last active October 9, 2024 11:34
Akka Cluster Implementation Notes

Akka Cluster Implementation Notes

Slightly disorganized but reasonably complete notes on the algorithms, strategies and optimizations of the Akka Cluster implementation. Could use a lot more links and context etc., but was just written for my own understanding. Might be expanded later.

Links to papers and talks that have inspired the implementation can be found on the 10 last pages of this presentation.

Akka Gossip

Gossip state

This is the Gossip state representation:

@r9y9
r9y9 / mlsa_filter.h
Last active February 15, 2023 11:07
MLSA digital filter for speech synthesis in C++
#pragma once
#include <cmath>
#include <memory>
#include <vector>
#include <cassert>
namespace sp {
/**
@raphw
raphw / UnsafeTest.java
Last active January 10, 2023 20:12
A demonstration of sun.misc.Unsafe
import org.junit.Before;
import org.junit.Test;
import sun.misc.Unsafe;
import sun.reflect.ReflectionFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import static org.junit.Assert.assertEquals;
@gakuzzzz
gakuzzzz / gist:8d497609012863b3ea50
Last active January 12, 2021 12:50
Scalaz勉強会 主要な型クラスの紹介
@thlorenz
thlorenz / .generating-xcode-via-gyp.md
Last active August 26, 2018 15:05
Generating Xcode projects from Node.js binding repos via gyp

This is specifically tailored to Node.js binding projects in which case the C++ layer is always a library.

Clone gyp:

git clone --depth 1 https://chromium.googlesource.com/external/gyp.git gyp

Add the below common.gypi file in the root of the project.

@okumin
okumin / akka-persistence.md
Created September 28, 2014 08:55
akka-persistenceのプラグインをつくろう
@rklaehn
rklaehn / Proxy.scala
Created January 31, 2015 16:29
Minimal akka http proxy
package akkahttptest
import akka.actor.ActorSystem
import akka.http.Http
import akka.stream.FlowMaterializer
import akka.http.server._
import akka.http.marshalling.PredefinedToResponseMarshallers._
import akka.stream.scaladsl.{HeadSink, Source}
object Proxy extends App {