Bill de hÓra dehora

SWIM Resources

Papers/Writing/Videos

SWIM: Scalable Weakly-consistent Infection-style Process Group Membership Protocol: the original paper and fairly approachable.
The Swim membership protocol: well written introduction to SWIM.
Swim overview. Talk from Armon Dadgar from HashiCorp.

WebDav put the 207 multi-status response code into the 2xx class regardless of per item errors, because for its usecase the top level response class don't matter. Also none of the error classes were a clear winner over 2xx. Even a batch with all failed items gets mapped to a success level code - but what really matters in Dav are the per item codes.

   Although '207' is used as the overall response status code, the
   recipient needs to consult the contents of the multistatus response
   body for further information about the success or failure of the
   method execution.  The response MAY be used in success, partial
   success and also in failure situations.

java -XX:+PrintFlagsFinal -version
[Global flags]
    uintx AdaptiveSizeDecrementScaleFactor          = 4               {product}
    uintx AdaptiveSizeMajorGCDecayTimeScale         = 10              {product}
    uintx AdaptiveSizePausePolicy                   = 0               {product}
    uintx AdaptiveSizePolicyCollectionCostMargin    = 50              {product}
    uintx AdaptiveSizePolicyInitializingSteps       = 20              {product}
    uintx AdaptiveSizePolicyOutputInterval          = 0               {product}
    uintx AdaptiveSizePolicyWeight                  = 10              {product}

java -XX:+PrintFlagsFinal -version

	# find docker
	eval "$(docker-machine env default)"

	# bounce docker
	docker-machine restart default

	# blitz containers
	docker rm $(docker ps -a -q)

	# blitz images

	cd ~/projects/bin/dynamodb

	cat > log4j2.xml <<- XML
	<?xml version="1.0" encoding="UTF-8"?>
	<Configuration status="fatal">
	<Appenders>
	<Console name="STDOUT" target="SYSTEM_OUT">
	<PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
	</Console>
	</Appenders>


	git clone https://github.com/google/protobuf.git
	cd protobuf
	git checkout v3.0.0-alpha-3.1
	brew install automake
	./autogen.sh
	./configure
	make
	sudo make install

	package net.dehora.kafka.scala

	import java.util.Properties

	import kafka.producer.{KeyedMessage, Producer, ProducerConfig}

	object KafkaTestProducer {

	def main(args: Array[String]): Unit = {
	val producer = createProducer()

	git clone https://github.com/apache/samza-hello-samza.git
	cd samza-hello-samza
	git checkout master
	rm -rf deploy/*
	bin/grid bootstrap
	mvn clean package
	rm -rf deploy/samza
	tar -xvf target/hello-samza-0.8.0-dist.tar.gz -C deploy/samza
	deploy/samza/bin/run-job.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/wikipedia-feed.properties
	deploy/samza/bin/run-job.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/wikipedia-parser.properties

	package io.intercom.api.secure;

	import org.apache.commons.codec.binary.Hex;

	import javax.crypto.Mac;
	import javax.crypto.spec.SecretKeySpec;
	import java.security.InvalidKeyException;
	import java.security.NoSuchAlgorithmException;
	import java.util.Base64;