Beyond the Buzzword - a reactive application in practice

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The document discusses reactive web application architecture and deployment. It presents an evolution of web application architecture including microservices. It then describes building a small reactive web application in Scala using Actors and Futures. For deployment, it recommends using a managed service like Lightbend ConductR for automated scaling and fault tolerance. Load testing tools like Gatling are also discussed.

Engineering

Beyond the buzzword:
a reac%ve web applica*on in prac*ce
Manuel Bernhardt - @elmanu
Slovak Scala Users' Group - May 2016
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Agenda
1. Evolu(on of web applica(on architecture
2. Evolu(on of hardware
3. Small Reac(ve Web Applica(on
4. Deployment
If you have a ques-on, shoot!
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Manuel Bernhardt
• I help established companies ge3ng
started with using reac%ve applica%ons
in their distributed systems
infrastructure
• h9p://manuel.bernhardt.io
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

A short (and mostly wrong)
history of web applica1on
architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

"Good old days" architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

"3 $er" architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

"Cloud" architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

"Microservices" architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

"Microservices" = emerging architecture
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Trend: increasing amount of network I/O
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Reac%ve architectural pa/ern
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Evolu&on of hardware
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Evolu&on of CPUs
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Evolu&on of memory
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Conclusion
• many-core & distributed systems
• awesome hardware
• awesome so5ware? we need:
• explicit asynchronous programming
• explicit failure handling
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Let's build a small Reac0ve Web
Applica0on
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Actors
• lightweight objects
• send and receive messages (mailbox)
• can have children (supervision)
"Long-lived" async computa5on
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

CODING
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Futures
scala.concurrent.Future[T]
• holds a value of type T
• can either fail or succeed
• async code does not block a thread
while wai8ng for comple8on
"Short-lived" async computa6on
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Pipe
akka.pattern.pipe
• bridge between Futures and Actors
• implemented as anonymous actor
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Circuit Breaker
akka.pattern.CircuitBreaker
• helpful when dealing with legacy / slow
systems & prevents cascading failure
• like an electric circuit breaker, trips
when there's a surge
• trips a=er a given number of failures, for
a given >meout, then a?empts reset
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Deployment
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Deployment
• stand-alone vs. "elas/c deployment"
• elas/c, fault-tolerant is not trivial
• use a managed service / solu/on
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Deployment
• Lightbend ConductR
• automated cluster management for
Play / Akka / ... applica>ons
• automated node failure & network
par++on resolu+on
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Deployment
• fully managed opera0ons
• auto scalability feature (horizontal &
ver0cal)
• a<rac0ve pricing
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Load tes)ng
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Gatling
• open-source load tes0ng framework
• built with Scala, Akka and Ne=y
• two phases: record and run
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Gatling simula,on ﬁle
// ...
setUp(
scn.inject(
nothingFor(4 seconds),
rampUsers(100) over(10 seconds),
atOnceUsers(10),
constantUsersPerSec(2) during(15 seconds) randomized,
splitUsers(500) into (
rampUsers(50) over(10 seconds)
) separatedBy(2 seconds)
).protocols(httpProtocol)
)
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Bees with machine guns
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Conﬁguring all the things
• Installing Python & bees with machine
guns
• AWS console (keys, security group w/
SSH access)
• boto conﬁg ﬁle
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Conﬁguring all the things
~/.boto
[Credentials]
aws_access_key_id = foobar1
aws_secret_access_key = foobar2
[Boto]
debug = 2
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

A"ack!
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

Thank you!
Ques%ons & Comments ?
• h#p://manuel.bernhardt.io
• manuel@bernhardt.io
• @elmanu
Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

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Modern applications are faced with the expectation of being always up. As a result, an increasing amount of businesses are transitioning to modern architectures such as the one of reactive microservice-based systems. As compelling as this sounds, this also means to embrace distribution so as to ensure fault-tolerance and scalability - which also means embracing the uncertainty and nondeterminism that comes with building networked applications: changes in link quality, network partitions and outages of individual nodes are scenarios that need to be addressed first-hand when designing such systems. In this talk you will learn about the fundamental mechanisms that clustered systems need in order to operate in this uncertain world, such as failure detection, gossip-based cluster state propagation, split brain resolution and convergent replicated data types (CRDTs). We will look at these mechanisms in the context of Akka Cluster. By the end of this talk you should have a solid understanding of the trade-offs that need to be made when building clustered applications. You will also get the sense that a networked application is not just one application, but the cooperation between individual processes that need to probe for each other’s availability and decide what to do when one or more of them are maybe unavailable all while not being able to talk with one another.

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Otago毕业证原版定制【微信：176555708】【奥塔哥大学毕业证成绩单-学位证】【微信：176555708】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。 ◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆ 【主营项目】一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！二.真实使馆公证(即留学回国人员证明,不成功不收费) 三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度) 如果您处于以下几种情况： ◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】 ◇面对父母的压力，希望尽快拿到； ◇不清楚认证流程以及材料该如何准备； ◇回国时间很长，忘记办理； ◇回国马上就要找工作，办给用人单位看； ◇企事业单位必须要求办理的 ◇需要报考公务员、购买免税车、落转户口 ◇申请留学生创业基金留信网认证的作用: 1:该专业认证可证明留学生真实身份 2:同时对留学生所学专业登记给予评定 3:国家专业人才认证中心颁发入库证书 4:这个认证书并且可以归档倒地方 5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息 6:个人职称评审加20分 7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子我给客户的都是第一手的代理价格，因为我想坦诚对待大家不想跟大家在价格方面浪费时间对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。 8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！学历顾问：微信：176555708

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Water Industry Process Automation & Control

Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control. In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.

一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证成绩单专业办理

zwunae

UMich毕业证原版定制【微信：176555708】【密歇根大学|安娜堡分校毕业证成绩单-学位证】【微信：176555708】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。 ◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆ 【主营项目】一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！二.真实使馆公证(即留学回国人员证明,不成功不收费) 三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度) 如果您处于以下几种情况： ◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】 ◇面对父母的压力，希望尽快拿到； ◇不清楚认证流程以及材料该如何准备； ◇回国时间很长，忘记办理； ◇回国马上就要找工作，办给用人单位看； ◇企事业单位必须要求办理的 ◇需要报考公务员、购买免税车、落转户口 ◇申请留学生创业基金留信网认证的作用: 1:该专业认证可证明留学生真实身份 2:同时对留学生所学专业登记给予评定 3:国家专业人才认证中心颁发入库证书 4:这个认证书并且可以归档倒地方 5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息 6:个人职称评审加20分 7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子我给客户的都是第一手的代理价格，因为我想坦诚对待大家不想跟大家在价格方面浪费时间对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。 8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！学历顾问：微信：176555708

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Hierarchical Digital Twin of a Naval Power System

Kerry Sado

A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.

Nuclear Power Economics and Structuring 2024

Massimo Talia

An Approach to Detecting Writing Styles Based on Clustering Techniques

ambekarshweta25

An Approach to Detecting Writing Styles Based on Clustering Techniques Authors: -Devkinandan Jagtap -Shweta Ambekar -Harshit Singh -Nakul Sharma (Assistant Professor) Institution: VIIT Pune, India Abstract: This paper proposes a system to differentiate between human-generated and AI-generated texts using stylometric analysis. The system analyzes text files and classifies writing styles by employing various clustering algorithms, such as k-means, k-means++, hierarchical, and DBSCAN. The effectiveness of these algorithms is measured using silhouette scores. The system successfully identifies distinct writing styles within documents, demonstrating its potential for plagiarism detection. Introduction: Stylometry, the study of linguistic and structural features in texts, is used for tasks like plagiarism detection, genre separation, and author verification. This paper leverages stylometric analysis to identify different writing styles and improve plagiarism detection methods. Methodology: The system includes data collection, preprocessing, feature extraction, dimensional reduction, machine learning models for clustering, and performance comparison using silhouette scores. Feature extraction focuses on lexical features, vocabulary richness, and readability scores. The study uses a small dataset of texts from various authors and employs algorithms like k-means, k-means++, hierarchical clustering, and DBSCAN for clustering. Results: Experiments show that the system effectively identifies writing styles, with silhouette scores indicating reasonable to strong clustering when k=2. As the number of clusters increases, the silhouette scores decrease, indicating a drop in accuracy. K-means and k-means++ perform similarly, while hierarchical clustering is less optimized. Conclusion and Future Work: The system works well for distinguishing writing styles with two clusters but becomes less accurate as the number of clusters increases. Future research could focus on adding more parameters and optimizing the methodology to improve accuracy with higher cluster values. This system can enhance existing plagiarism detection tools, especially in academic settings.

Building Electrical System Design & Installation

symbo111

在线办理(ANU毕业证书)澳洲国立大学毕业证录取通知书一模一样

obonagu

学校原件一模一样【微信：741003700 】《(ANU毕业证书)澳洲国立大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。本公司拥有海外各大学样板无数，能完美还原。 1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700 【主营项目】一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！二.真实使馆公证(即留学回国人员证明,不成功不收费) 三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度) 如果您处于以下几种情况： ◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】 ◇面对父母的压力，希望尽快拿到； ◇不清楚认证流程以及材料该如何准备； ◇回国时间很长，忘记办理； ◇回国马上就要找工作，办给用人单位看； ◇企事业单位必须要求办理的 ◇需要报考公务员、购买免税车、落转户口 ◇申请留学生创业基金留信网认证的作用: 1:该专业认证可证明留学生真实身份 2:同时对留学生所学专业登记给予评定 3:国家专业人才认证中心颁发入库证书 4:这个认证书并且可以归档倒地方 5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息 6:个人职称评审加20分 7:个人信誉贷款加10分 8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才

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Beyond the Buzzword - a reactive application in practice

1. Beyond the buzzword: a reac%ve web applica*on in prac*ce Manuel Bernhardt - @elmanu Slovak Scala Users' Group - May 2016 Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

2. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

3. Agenda 1. Evolu(on of web applica(on architecture 2. Evolu(on of hardware 3. Small Reac(ve Web Applica(on 4. Deployment If you have a ques-on, shoot! Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

4. Manuel Bernhardt • I help established companies ge3ng started with using reac%ve applica%ons in their distributed systems infrastructure • h9p://manuel.bernhardt.io Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

5. Manuel Bernhardt • I help established companies ge3ng started with using reac%ve applica%ons in their distributed systems infrastructure • h9p://manuel.bernhardt.io Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

6. A short (and mostly wrong) history of web applica1on architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

7. "Good old days" architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

8. "3 $er" architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

9. "Cloud" architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

10. "Cloud" architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

11. "Microservices" architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

12. "Microservices" = emerging architecture Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

13. Trend: increasing amount of network I/O Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

14. Trend: increasing amount of network I/O Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

15. Reac%ve architectural pa/ern Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

16. Evolu&on of hardware Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

17. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

18. Evolu&on of CPUs Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

19. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

20. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

21. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

22. Evolu&on of memory Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

23. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

24. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

25. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

26. Conclusion • many-core & distributed systems • awesome hardware • awesome so5ware? we need: • explicit asynchronous programming • explicit failure handling Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

27. Let's build a small Reac0ve Web Applica0on Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

28. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

29. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

30. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

31. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

32. Actors • lightweight objects • send and receive messages (mailbox) • can have children (supervision) "Long-lived" async computa5on Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

33. CODING Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

34. Futures scala.concurrent.Future[T] • holds a value of type T • can either fail or succeed • async code does not block a thread while wai8ng for comple8on "Short-lived" async computa6on Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

35. Pipe akka.pattern.pipe • bridge between Futures and Actors • implemented as anonymous actor Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

36. Pipe akka.pattern.pipe • bridge between Futures and Actors • implemented as anonymous actor Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

37. Circuit Breaker akka.pattern.CircuitBreaker • helpful when dealing with legacy / slow systems & prevents cascading failure • like an electric circuit breaker, trips when there's a surge • trips a=er a given number of failures, for a given >meout, then a?empts reset Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

38. Deployment Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

39. Deployment • stand-alone vs. "elas/c deployment" • elas/c, fault-tolerant is not trivial • use a managed service / solu/on Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

40. Deployment • Lightbend ConductR • automated cluster management for Play / Akka / ... applica>ons • automated node failure & network par++on resolu+on Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

41. Deployment • fully managed opera0ons • auto scalability feature (horizontal & ver0cal) • a<rac0ve pricing Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

42. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

43. Load tes)ng Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

44. Gatling • open-source load tes0ng framework • built with Scala, Akka and Ne=y • two phases: record and run Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

45. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

46. Gatling simula,on ﬁle // ... setUp( scn.inject( nothingFor(4 seconds), rampUsers(100) over(10 seconds), atOnceUsers(10), constantUsersPerSec(2) during(15 seconds) randomized, splitUsers(500) into ( rampUsers(50) over(10 seconds) ) separatedBy(2 seconds) ).protocols(httpProtocol) ) Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

47. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

48. Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

49. Bees with machine guns Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

50. Configuring all the things • Installing Python & bees with machine guns • AWS console (keys, security group w/ SSH access) • boto config file Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

51. Conﬁguring all the things ~/.boto [Credentials] aws_access_key_id = foobar1 aws_secret_access_key = foobar2 [Boto] debug = 2 Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

52. A"ack! Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

53. Thank you! Ques%ons & Comments ? • h#p://manuel.bernhardt.io • manuel@bernhardt.io • @elmanu Slovak Scala Users' Group May 2016 - manuel.bernhardt.io - @elmanu

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