Effective Akka

by Jamie Allen

With this concise guide, author Jamie Allen provides a collection of best practices based on several years of using the actor model.

Effective Akka

Author: Jamie Allen

Publisher: "O'Reilly Media, Inc."

ISBN: 1449360033

Page: 74

View: 621

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

Learning Akka

by Jason Goodwin

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 ...

Learning Akka

Author: Jason Goodwin

Publisher: Packt Publishing Ltd

ISBN: 1784393541

Page: 274

View: 235

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.

Applied Akka Patterns

by Michael Nash

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.

Applied Akka Patterns

Author: Michael Nash

Publisher: "O'Reilly Media, Inc."

ISBN: 1491934832

Page: 198

View: 360

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

Strengthening of Domestic and International Co operation for Effective Investigation and Prosecution of Corruption

by United Nations Asia and Far East Institute for the Prevention of Crime and Treatment of Offenders

Accelerating State Reform : Strengthing Good Governance and Improving Public
Service Delivery ” , Supreme Council ... Royal Government of Cambodia ,
addressed by Samdech Akka Moha Sena Padei Techo HUN SEN , Prime
Minister of ...

Strengthening of Domestic and International Co operation for Effective Investigation and Prosecution of Corruption

Author: United Nations Asia and Far East Institute for the Prevention of Crime and Treatment of Offenders

Publisher:

ISBN:

Page: 157

View: 879

Akka

by

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 ...

Akka

Author:

Publisher:

ISBN:

Page: 150

View: 963

Akka Cookbook

by Hector Veiga Ortiz

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.

Akka Cookbook

Author: Hector Veiga Ortiz

Publisher: Packt Publishing Ltd

ISBN: 1785288369

Page: 414

View: 340

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.

The Master in Akk

by Myron Henry Phelps

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
 ...

The Master in Akk

Author: Myron Henry Phelps

Publisher: Kalimat Press

ISBN:

Page: 161

View: 616

Reactive Design Patterns

by Roland Kuhn

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.

Reactive Design Patterns

Author: Roland Kuhn

Publisher:

ISBN: 9781617291807

Page: 325

View: 920

Modern distributed applications must deliver near-realtime performance while simultaneously managing big data and high user loads spread across environments ranging from cloud systems to mobile devices. Unlike traditional enterprise applications which focus on decoupling their internal components by defining programming interfaces, reactive applications go one step further and decouple their components also at runtime. This makes it possible to react effectively and efficiently to failures, varying user demands, and changes in the application's execution environment. The resulting systems are highly concurrent and fault-tolerant, with minimal dependencies among individual system components. Reactive Design Patterns is a clearly-written guide for building message-driven distributed systems that are resilient, responsive, and elastic. It contains 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—in some cases, Java, JavaScript, and Erlang. Software engineers and architects will learn patterns that address day-to-day distributed development problems in a fault-tolerant and scalable way. Project leaders and CTOs will gain a deeper understanding of the reactive design philosophy. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.

Report

by Scottish Plant Breeding Station

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 ) ,
BH ...

Report

Author: Scottish Plant Breeding Station

Publisher:

ISBN:

Page:

View: 602

Thomson Bank Directory

by

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, ...

Thomson Bank Directory

Author:

Publisher:

ISBN:

Page:

View: 355

Good Housekeeping

by

Rimadyl was shown to be clinically effective for the relief of signs associated with
osteoarthritis in dogs . DOSAGE ... Toiletries and brushes : Akka Kappa , French
Look , Coco Co. , Lacy camisole from Go Figure Inti In Home ( 516-324-3285 ) .

Good Housekeeping

Author:

Publisher:

ISBN:

Page:

View: 629

The Kanji Dictionary

by Mark Spahn

The Kanji Dictionary

Author: Mark Spahn

Publisher: Tuttle Publishing

ISBN: 9780804820585

Page: 1768

View: 539

The acknowledged authority on Japanese Kanji, The Kanji Dictionary makes written Japanese more accessible than ever before and is an absolutely vital tool for anyone seeking to learn Japanese at an intermediate or advanced level. This is the only kanji dictionary of its kind to employ a revolutionary multiple–reference compound system. Every kanji compound, a word or phrase made up of two or more characters, is listed under each of its components characters. This unique, time–saving feature makes finding compounds fast and easy. Entries are arranged according to a radical based reference system, similar to that used in most other dictionaries, but it has been simplified to make it easier to learn and use. Also, the comprehensive on/kun readings index and handy radical "overview lists" provide further means to find an entry. The focus of this reference work is kanji compounds, and the more than 47,000 entries in the main text include the most common and most important terms and expressions currently in use. The addition of newly coined terms, particularly those in new technical fields, is another key feature. Features over 47,000 entries with an emphasis on current expressions. Arranged for search from any kanji in a compound. Contains a complete on/kun (Chinese/Japanese) reading index. Includes an easy–to–use radical guide. Provides appendices of counters, historical periods, common Japanese surnames, etc.

Annual Report on Research and Technical Work of the Department of Agriculture for Northern Ireland

by Great Britain. Department of Agriculture for Northern Ireland

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 ) .

Annual Report on Research and Technical Work of the Department of Agriculture for Northern Ireland

Author: Great Britain. Department of Agriculture for Northern Ireland

Publisher:

ISBN:

Page:

View: 968

Technical Report Laboratory for Insulation Research

by Massachusetts Institute of Technology. Laboratory for Insulation Research

... + 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 ...

Technical Report Laboratory for Insulation Research

Author: Massachusetts Institute of Technology. Laboratory for Insulation Research

Publisher:

ISBN:

Page:

View: 707

Missionary Herald

by

He has considerable knowledge of United States vice - consul at Akka . of
evangelical truth , but does not seem All have ... a per- would , with God's
blessing , render him sonal interest in the great salvation . an effective preacher
of the gospel .

Missionary Herald

Author:

Publisher:

ISBN:

Page:

View: 601

The Missionary Herald

by

He has considerable knowledge of United States vice - consul at Akka . of
evangelical truth , but does not seem All ... a per - would , with God ' s blessing ,
render him sonal interest in the great salvation . an effective preacher of the
gospel .

The Missionary Herald

Author:

Publisher:

ISBN:

Page:

View: 166

Vols. for 1828-1934 contain the Proceedings at large of the American Board of Commissioners for Foreign Missions.

Haploids in Plant Breeding

by Werner Nitzsche

... Akka ' and from various hybrids . The anthers were plated when the
microspores were at the uninucleate vacuolated stage . In all experiments the
basal medium of LINSMAIER and Skoog ( 1965 ; appendix , Tab . 34 ) was most
effective for ...

Haploids in Plant Breeding

Author: Werner Nitzsche

Publisher: Paul Parey Scientific Pub

ISBN:

Page: 101

View: 603

Aims in haploid breeding. Production of haploid plants. Aspects of population genetics. Production and use of haploids. Use of haploid cell cultures.

Language Forum

by

19 ( E ) She spent her week end with her sister's husband ( T ) a : me tana ad : iva
ranni tana akka mogưdito : gad pindi ... are the most ' effective means ' of
completing the action or ' the most essential elements after the subject ' for '
process ...

Language Forum

Author:

Publisher:

ISBN:

Page:

View: 731