Effective. Akka. Avoid common mistakes when building distributed, asynchronous
, highperformance software with the Akka toolkit and runtime. With this concise
guide, author Jamie Allen provides a collection of best practices based on
Author: Jamie Allen
Publisher: "O'Reilly Media, Inc."
Avoid common mistakes when building distributed, asynchronous, high-performance software with the Akka toolkit and runtime. With this concise guide, author Jamie Allen provides a collection of best practices based on several years of using the actor model. The book also includes examples of actor application types and two primary patterns of actor usage, the Extra Pattern and Cameo Pattern. Allen, the Director of Consulting for Typesafe—creator of Akka and the Scala programming language—examines actors with a banking-service use case throughout the book, using examples shown in Akka and Scala. If you have any experience with Akka, this guide is essential. Delve into domain-driven and work-distribution actor applications Understand why it’s important to have actors do only one job Avoid thread blocking by allowing logic to be delegated to a Future Model interactions as simply as possible to avoid premature optimization Create well-defined interactions, and know exactly what failures can occur Learn why you should never treat actors as you would an ordinary class Keep track of what goes on in production by monitoring everything Tune Akka applications with the Typesafe Console
The term extra is a term attributed to Jamie Allen in his book Effective Akka from
O'Reilly publications where he demonstrates a similar pattern which he refers to
as the Extra Pattern. After creating the extraActor, the receive block continues to ...
Author: Jason Goodwin
Publisher: Packt Publishing Ltd
Build fault tolerant concurrent and distributed applications with Akka About This Book Build networked applications that self-heal Scale out your applications to handle more traffic faster An easy-to-follow guide with a number of examples to ensure you get the best start with Akka Who This Book Is For This book is intended for beginner to intermediate Java or Scala developers who want to build applications to serve the high-scale user demands in computing today. If you need your applications to handle the ever-growing user bases and datasets with high performance demands, then this book is for you. Learning Akka will let you do more for your users with less code and less complexity, by building and scaling your networked applications with ease. What You Will Learn Use Akka to overcome the challenges of concurrent programming Resolve the issues faced in distributed computing with the help of Akka Scale applications to serve a high number of concurrent users Make your system fault-tolerant with self-healing applications Provide a timely response to users with easy concurrency Reduce hardware costs by building more efficient multi-user applications Maximise network efficiency by scaling it In Detail Software today has to work with more data, more users, more cores, and more servers than ever. Akka is a distributed computing toolkit that enables developers to build correct concurrent and distributed applications using Java and Scala with ease, applications that scale across servers and respond to failure by self-healing. As well as simplifying development, Akka enables multiple concurrency development patterns with particular support and architecture derived from Erlang's concept of actors (lightweight concurrent entities). Akka is written in Scala, which has become the programming language of choice for development on the Akka platform. Learning Akka aims to be a comprehensive walkthrough of Akka. This book will take you on a journey through all the concepts of Akka that you need in order to get started with concurrent and distributed applications and even build your own. Beginning with the concept of Actors, the book will take you through concurrency in Akka. Moving on to networked applications, this book will explain the common pitfalls in these difficult problem areas while teaching you how to use Akka to overcome these problems with ease. The book is an easy to follow example-based guide that will strengthen your basic knowledge of Akka and aid you in applying the same to real-world scenarios. Style and approach An easy-to-follow, example-based guide that will take you through building several networked-applications that work together while you are learning concurrent and distributed computing concepts. Each topic is explained while showing you how to design with Akka and how it is used to overcome common problems in applications. By showing Akka in context to the problems, it will help you understand what the common problems are in distributed applications and how to overcome them.
Last modified November 12, 2014. http://c2.com/cgi/wiki?AlanKayOnMessaging.
Allen, Jamie. Effective Akka. Sebastopol: O'Reilly Media, 2013. Avram, Abel, and
Floyd Marinescu. DomainDriven Design Quickly. Lulu.com, 2007. Evans, Eric.
Author: Michael Nash
Publisher: "O'Reilly Media, Inc."
When it comes to big data processing, we can no longer ignore concurrency or try to add it in after the fact. Fortunately, the solution is not a new paradigm of development, but rather an old one. With this hands-on guide, Java and Scala developers will learn how to embrace concurrent and distributed applications with the open source Akka toolkit. You’ll learn how to put the actor model and its associated patterns to immediate and practical use. Throughout the book, you’ll deal with an analogous workforce problem: how to schedule a group of people across a variety of projects while optimizing their time and skillsets. This example will help you understand how Akka uses actors, streams, and other tools to stitch your application together. Model software that reflects the real world with domain-driven design Learn principles and practices for implementing individual actors Unlock the real potential of Akka with patterns for combining multiple actors Understand the consistency tradeoffs in a distributed system Use several Akka methods for isolating and dealing with failures Explore ways to build systems that support availability and scalability Tune your Akka application for performance with JVM tools and dispatchers
Author: United Nations Asia and Far East Institute for the Prevention of Crime and Treatment of OffendersPublish On: 2009
Royal Government of Cambodia , addressed by Samdech Akka Moha Sena
Padei Techo HUN SEN , Prime Minister of the Kingdom of Cambodia , on “
Rectangular Strategy : For Growth , Employment , Equity and Efficiency ” Phase II
, First ...
Author: United Nations Asia and Far East Institute for the Prevention of Crime and Treatment of Offenders
LAXMI First of all at the outset , I do want to say that the drama can be equally effective with men and women or children . Especially with those who are
marginalized , who are in positions of oppression ? Since our particular topic
today is the ...
This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka.
Author: Hector Veiga Ortiz
Publisher: Packt Publishing Ltd
Learn how to use the Akka framework to build effective applications in Scala About This Book Covers a discussion on Lagom—the newest launched Akka framework that is built to create complex microservices easily The recipe approach of the book allows the reader to know important and independent concepts of Scala and Akka in a seamless manner Provides a comprehensive understanding of the Akka actor model and implementing it to create reactive web applications Who This Book Is For If you are a Scala developer who wants to build scalable and concurrent applications, then this book is for you. Basic knowledge of Akka will help you take advantage of this book. What You Will Learn Control an actor using the ContolAware mailbox Test a fault-tolerant application using the Akka test kit Create a parallel application using futures and agents Package and deploy Akka application inside Docker Deploy remote actors programmatically on different nodes Integrate Streams with Akka actors Install Lagom and create a Lagom project In Detail Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework. Style and approach This highly practical recipe-based approach will allow you to build scalable, robust, and reactive applications using the Akka framework.
Author: Welsh Plant Breeding StationPublish On: 1974
In 1971 , F , populations were space planted in the field from crosses which have
, on the one hand , parents with highly effective ' major ' genes , e . g . Mla , from
Amsel and Mla , + JMinz from Akka and , on the other hand , high yielding ...
In this book you'll find patterns for messaging, flow control, resource management, and concurrency, along with practical issues like test-friendly designs. All patterns include concrete examples using Scala and Akka.
Author: Roland Kuhn
Tabari reminded the mufti, “I leave for Akka in the morning, and to be effective,
your money should reach the mutasarrif promptly.” The mufti bowed, extended
his hand in friendship, then led the qadi from the room. As soon as they had
Author: James A. Michener
Publisher: Dial Press
In his signature style of grand storytelling, James A. Michener transports us back thousands of years to the Holy Land. Through the discoveries of modern archaeologists excavating the site of Tell Makor, Michener vividly re-creates life in an ancient city and traces the profound history of the Jewish people—from the persecution of the early Hebrews, the rise of Christianity, and the Crusades to the founding of Israel and the modern conflict in the Middle East. An epic tale of love, strength, and faith, The Source is a richly written saga that encompasses the history of Western civilization and the great religious and cultural ideas that have shaped our world. BONUS: This edition includes an excerpt from James A. Michener's Hawaii. Praise for The Source “Fascinating . . . stunning . . . [a] wonderful rampage through history . . . Biblical history, as seen through the eyes of a professor who is puzzled, appalled, delighted, enriched and impoverished by the spectacle of a land where all men are archeologists.”—The New York Times “A sweeping [novel] filled with excitement—pagan ritual, the clash of armies, ancient and modern: the evolving drama of man’s faith.”—The Philadelphia Inquirer “Magnificent . . . a superlative piece of writing both in scope and technique . . . one of the great books of this generation.”—San Francisco Call Bulletin
And again , that the Bahá ' í Faith has “ a vital and effective power to mould life . ”
These things were a revelation to him , Phelps says . He saw in what he had
witnessed there in ' Akká " the potentiality of immense good to other nations of the
... Mfrza Husayn-Khan, the Mush1ru'd-Dawlih,* who in earlier years as Persian
Ambassador in Turkey had assiduously worked against Baha'u'llah, but who later
changed his attitude, is a proof that nothing can be as effective as pure and holy ...
(JLPT All Levels) This Japanese Character Dictionary and Kanji Textbook Uses
an Innovative and Effective System Vee David. 悪化 worsening, deterioration akka 化け物 beast, monster bakemono 化けの皮 hidding, secret bakenokawa
Author: Vee David
Publisher: Tuttle Publishing
Category: Foreign Language Study
This massive 3.6 pound text is the ultimate authoritative book on learning Japanese Kanji. The Kanji Handbook presents an ingenious and tested method to learn the 1,945 kanji characters taught in all Japanese language schools. Through the use of "KanjiHybrids"—a concept invented by the author—learners of Kanji and taught to link the characters mentally with English words to form one integral and indivisible unit. This innovative mnemonic device has been proven to train the learner to retain each kanji in the memory much better than simple repetition of the kanji alone—as well as enabling users to differentiate similar–looking kanji characters. Specific learning strategies also enable users to progress quickly from the beginner to advanced level kanji, with stroke orders shown clearly for each kanji character. Eight different indexes-including the highly useful Flip–it Index—form the last part of this unique handbook. Contains the complete list of all 1,945 kanji characters taught in Japanese schools. Presents a new KanjiHybrids system linking kanji characters with English words to aid memorization. Innovative learning strategies guide learners at all levels from beginner to advanced.
Akka.io implements a reliable action model originally introduced as part of the
Scala standard library. ... Scala concurrent classes support effective deployment
of an application by leveraging multicore CPU capabilities without the need to
Author: Patrick R. Nicolas
Publisher: Packt Publishing Ltd
Are you curious about AI? All you need is a good understanding of the Scala programming language, a basic knowledge of statistics, a keen interest in Big Data processing, and this book!
The industrial - Limited Bank, Limi - lmed effective April 1, 2002 up mited were
split & reorganized to form the Mizuho Bank, ... £akka THEk Dept MAN C s *NA' :-
City, SWIFT CHAS US 33, Dept MAIN V **dest one, The Sh 5* :* Bank #2 * 5x, ...
Author: Scottish Plant Breeding StationPublish On: 1978
Unfortunately , a natural epidemic of yellow rust prevented effective assessment
in the brown rust nursery . ... A number of selections from the crosses BR 83 (
Maris Mink x Mazurka ) , BH 4 ( Akka x Midas ) , BH 213 ( Akka x Maris Mink ) ,
In Palestine the line of march led the pilgrims close to the walls of ' Akka , Haifa ,
Caesarea and Arsuf in succession . A short ... 41 makes the host when it reached
' Akka 50 , 000 , but of these scarcely 20 , 000 were effective troops ; Albert v .
Author: Massachusetts Institute of Technology. Laboratory for Insulation ResearchPublish On: 1946
... + int ( 93 ) AKKA fKAF'K'V ff.OK Okit fK ff ' KK ' The effective matrix element of
the interaction Hamiltonian is given , to different orders , by : int < f | Hintli > ? < f \
H Hintli ) ( fH le > < elHoli ) < f | Hintli ) " = ? Ei - EL < 1 / Hintle > < ! Hintle ' > < l ...
Author: Massachusetts Institute of Technology. Laboratory for Insulation Research
Author: Great Britain. Department of Agriculture for Northern IrelandPublish On: 1980
The results showed that all the spray treatments caused a reduction in the
incidence of mildew , the most effective being the ... ( BMR2 + 4 ) while the least
affected were Wing ( BMR6 ) , Mazurka ( BMR2 + 6 ) , Tyra ( BMR7 ) and Akka (
BMR8 ) .
Author: Great Britain. Department of Agriculture for Northern Ireland
... among them senior officers who argued that atomic bombs were either no
more effective than “ blockbusters " or that they ... a truly fictional concept , one
fostered by science fiction , where magical secrets like " AKKA " could indeed be
Author: Martha A. Bartter
Category: Literary Criticism
Bartter surveys 250 American science-fiction stories, and American SF novels--with occasional overlaps of stories made into episodic novels--that have some relationship, often direct, sometimes marginal, to atomic weapons and their effects. . . . Highly recommended for popular literature collections. Choice Divided into three principal parts, The Way to Ground Zero begins by exploring The Way to Hiroshima. Through a detailed analysis of the works included, Bartter reveals the sociopolitical assumptions that authors took for granted and develops a method by which these assumptions can be disclosed. She shows that encoded in these fictions we can find the patterns that led us to create and use the atomic bomb. In the second section, Bartter looks at the deeper assumptions on which these sociopolitical assumptions rest, focusing particularly on those which perpetuate considerations of nuclear war--both in science fiction and in actual policy making. Finally, Bartter explores alternative assumptions proposed by innovative science fiction writers. Throughout, an attempt is made to forge a deeper understanding of the ways in which science fiction both reflects and influences human and international relations. Students of science fiction and of literature and politics will find Bartter's work enlightening, provocative reading. Bartter argues that a close examination of American fiction, particularly science fiction, can offer important new insights into the events surrounding the bombing of Hiroshima in 1945. The use of an atomic bomb to end the war followed a scenario long established in science fiction--defeating our enemy with a super-weapon developed by native technological genius. By examining the interrelationship between this persistent plot-device and the development and use of a real super-weapon, Bartter sheds new light on the transactional role of literature and real life. Her analysis is based on a comprehensive theory of human nature, substantiated by exhaustive research in science fiction archives and libraries and covers a large number of stories--both well-known and relatively obscure--featuring super weapons or super war and published by American authors.