finagle

1. New MAVEN Project2. Pom File Add dependencyAdd 3 main dependenciesDependency> groupId>Com.twittergroupId> Artifactid>scrooge-core_2.10Artifactid> version>${scrooge.version}version> Dependency> Dependency> groupId>Com.twittergroupId> Artifactid>finagle-thrift_2.10Artifactid> version>${finagle.version}version> Dependency> Dependency> groupId>Com.t

source k-v storage), Kafka (Apache project, distributed publish-Subscribe message system from LinkedIn), Finagle (by Twitter's open source fault-tolerant, protocol-neutral RPC system), there is also an interesting cell-based architecture to support dashboard (csdn Note: Tumblr's distinctive user interface, similar to the micro-blogging timeline). Tumblr's biggest problem now is how to transform it into a massive web site. The system architecture is e

based on Scala, HBase, Redis (the famous open source K-v storage scheme), Kafka (Apache project, a distributed publish-subscribe messaging system from LinkedIn), Finagle (a fault-tolerant, protocol-neutral RPC system powered by Twitter), plus an interesting cell-based architecture to support dashboard (csdn Note: Tumblr's feature-rich user interface, like the timeline of Weibo). Tumblr's biggest problem now is how to transform it into a massive websi

= falseIt is used to set whether to output data to the log configured by log4j. rootLogger at the same time. If it is set to false, it will not be output to other places! Note that "myTest1" here is the custom name you gave logger in the program!If you say that I just don't want to output this log to the logfile configured by log4j. rootLogger at the same time, I still want to output this log in stdout! Let's do it. Change your log4j. logger. myTest1 = DEBUG and test1 to the next step!Log4j. lo

implemented, which causes the access jitter and affects the other calls of the same service pool, it needs to increase the fault tolerance and fast failure strategy like MySQL client; MySQL slave traffic is unbalanced and needs to be re-added, on-line, and validated because there is no common load balancing policy between multiple slave IPs. In addition, most of the remote resources in the current distributed system are IO bound rather than CPU bound, and most of the clients are synchr

experiencing similar technological architecture evolution: A giant that is rapidly developed based on RoR (or similar frameworks) in the early stages of entrepreneurship Peel off key modules independently and move toward SOA may be more finely decoupled and become microservices There are many benefits to using SOA, but at a cost. A distributed system is naturally more complex than a single, behemoth service that implements the same functionality. Addressing and managing the comp

Last year (2014) the company decided to change the service framework to Finagle (follow-up article details), but the company business system is mostly written in C #, and then finagle only provide Scala/java client so can only do their own hands and clothing, the project used Zookpeerclient+thriftclient then encapsulates the client loadblance part and the failover part itself.Usage Scenario: Web server (Win

=org.apache.log4j.patternlayoutLog4j.appender.stdout.layout.ConversionPattern = [Ip2city-finagle] [%t]%d{yyyy MM dd hh:mm:ss,sss} [%p]%m%n#fileoutLog4j.appender.file = Org.apache.log4j.RollingFileAppenderLog4j.appender.file.File =/data/online/ganji_services/logs/ip2city/ip2city.logLog4j.appender.file.Append = TrueLog4j.appender.file.threshold=infolog4j.appender.file.maxfilesize=150mblog4j.appender.file.maxbackupindex=10Log4j.appender.file.layout =org.

as follows: Hbase-client because the fault-tolerant design is not implemented, which causes the access jitter and affects the other calls of the same service pool, it needs to increase the fault tolerance and fast failure strategy like MySQL client; MySQL slave traffic is unbalanced and needs to be re-added, on-line, and validated because there is no common load balancing policy between multiple slave IPs. In addition, most of the remote resources in the current distributed sy

experiences. Due to the high requirements of Twitter for scalability, performance, and concurrency, these quality attributes are also of great concern to these frameworks. Finagle is one of them. It is an extended RPC system to support the construction of high concurrent servers. I didn't really use finagle in the project, so you can get more information on its official website.For distributed support, the

This is a creation in Article, where the information may have evolved or changed. Peter Bourgon is the creator of Go Kit. Strong majority of audience here have heard of Go kit. What is Go kit? Go Kit is a toolkit for microservices. In the early days, this meant something very specific at SoundCloud (where Peter worked at the time). They were using Finagle for microservices, but there wasn ' t a go equivalent, so Go started to lose favor among the tea

2.x are compatible and do not change any of the existing features and configurations of the Dubbo (in addition to the upgrade of versions such as spring). In addition, Dubbox also strictly complies with the requirements of the Apache 2.0 license.Attached: Distributed service framework and RPC frameworkThere are also a number of distributed service frameworks found in the open source field, including Finagle (Scala-based), Flipkart (the largest busine

Netty is one of the most popular NIO frameworks in the industry, and its robustness, high performance, customization, and scalability are all the same in the same framework. It has been validated by hundreds of commercial projects, such as the RPC framework Avro of Hadoop, which uses Netty as the underlying communication framework, and other industry-leading RPC frameworks, such as Dubbo, Google Open source Grpc, Sina Weibo open source Motan, Twitter's Open-source

Service grid: Micro-services into the 2.0 era The micro-service, which was first proposed by Martin Fowler in March 2014, has been the most mainstream distributed application solution with the help of various micro-service frameworks such as Spring Cloud, Dubbo, and Prairie Fire, which swept the entire IT technology community. But there are still a lot of problems have not been fundamentally resolved, such as the high technical threshold, the lack of multi-language support, code intrusion is st

In the first minute of 2014, Sina Weibo released 808,298 Records again, and the first second was a 55% increase in the number of tweets. (Data Source: Sina Science and technology) This is the microblogging platform RPC framework "Motan" the first peak after the line, the overall performance is stable, basically reached the initial "application side no sense" goal. In the case of RPC service, the microblogging platform is not the first to eat crabs: early there are foreign pioneers such as Amazo

languages, giving the team more freedom and autonomy.How to practice? Containerized and Clustered Tools Docker Docker Swarm Kubernetes Mesos Serf Nomad Infrastructure Automation/Deployment Jenkins TerraForm Vagrant Packer Otto Chef, Puppet, Ansible Configuration Edda Archaius Decider ZooKeeper Service discovery Eureka Prana Finagle ZooKe

Service discovery Eureka Prana Finagle ZooKeeper Consul Routing and load Balancing Denominator Zuul Netty Ribbon HAProxy Nginx Monitoring, tracking, logging Hystrix Consul Health Checks Zipkin Pytheus Salp Elasticsearch Logstash Data protocol Protocol buffers Thrift Json/xml/other text Some of the tools described aboveAs this a

, each is incomplete, but can be specialized to solve specific problems, in fact, through the existing Java technology stack can be seen clues: ZooKeeper: Solves the problem of synchronization and collaboration of distributed systems (and may also benefit from higher level of abstraction components such as helix, curator). Mesos, YARN: Addressing virtualization and resource management issues. Embedded Components Lucene, LevelDB: Solve indexing problems. Netty, jetty and high

, Redhat, and Spark, Finagle, Nifty and other projects.A lot of other adaptor are in http://netty.io/wiki/adopters.html.At present, the main maintenance version number of Netty is 3.x, 4.x, 5.x.I touch a lot more is 5.x, very many frameworks are based on 3.x development. 3 4 5 There are some differences betweenI think the new version number has been developed in the past experience and lessons. The basic 5 used.Netty do somethingHttp://netty.io/images

. The program then uses new to create a dynamic array consisting of the corresponding number of car structures. Next, the program prompts the user to enter the manufacturer of each car (which may consist of multiple words) and year information. Note that this requires special care because it will alternately read values and strings (see chap. 4th). Finally, the program displays the contents of each structure. #include 8. Write a program that uses a char array and loops to read one word at a