COMP9321 Web Application Engineering
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1 COMP9321 Web Application Engineering Semester 2, 2015 Dr. Amin Beheshti Service Oriented Computing Group, CSE, UNSW Australia Week 11 (Part I) 1
2 Assignments Assignment 1 GradeBook Assignment 2 Demo Assignment 3 Due Sunday, October , 23:59:59 2
3 Review Performance 3
4 Performance 4
5 Scalability 5
6 Why does performance and scalability matter? 6
7 Architectural Considerations (Network) 7
8 Architectural Considerations - Network 8
9 Architectural Considerations - Network 9
10 Architectural Considerations - Network 10
11 Architectural Considerations (Server) 11
12 Architectural Considerations - Server 12
13 Architectural Considerations - Server 13
14 Architectural Considerations - Server 14
15 General Techniques for Improving Performance and Scalability 15
16 General Techniques for Improving Performance and Scalability 1. Caching/Replication 2. Parallelism 3. Redundancy 4. Asynchrony 5. Resource Pooling 16
17 General Techniques for Improving Performance and Scalability 1. Caching/Replication 17
18 General Techniques for Improving Performance and Scalability 2. Parallelism 18
19 General Techniques for Improving Performance and Scalability 3. Redundancy 19
20 General Techniques for Improving Performance and Scalability 4. Asynchrony 20
21 General Techniques for Improving Performance and Scalability 5. Resource Pooling 21
22 Improving Performance using HTTP features 22
23 Improving Performance using HTTP features 23
24 Improving Performance using HTTP features 24
25 Improving Performance using HTTP features 25
26 Improving Performance using HTTP features 26
27 Improving Performance using HTTP features 27
28 Improving Performance using HTTP features 28
29 Improving Performance using HTTP features AJAX = Asynchronous JavaScript and XML Update a web page without reloading the page Request data from a server - after the page has loaded Receive data from a server - after the page has loaded Send data to a server - in the background 29
30 Improving Performance using HTTP features 30
31 Improving Database Access 31
32 Improving Database Access 32
33 Improving Database Access 33
34 Improving Database Access 34
35 Improving Database Access 35
36 Improving Database Access 36
37 Improving Database Access 37
38 Improving Database Access 38
39 Improving Database Access 39
40 Improving Database Access 40
41 Improving Database Access 41
42 Improving Database Access 42
43 Improving Database Access 43
44 Improving Database Access 44
45 Improving Database Access 45
46 Improving Database Access 46
47 Characteristics of Scalability 47
48 Characteristics of Scalability 48
49 Characteristics of Scalability 49
50 Characteristics of Scalability 50
51 Scaling and Request Load Balancing 51
52 Scaling & Request Load Balancing Types of Scaling: 52
53 Scaling & Request Load Balancing Types of Scaling: 53
54 Scaling & Request Load Balancing Request Load Balancing for Horizontal Scaling 54
55 Scaling & Request Load Balancing Request Load Balancing for Horizontal Scaling 55
56 Scaling & Request Load Balancing 56
57 Scaling & Request Load Balancing 57
58 Scaling & Request Load Balancing 58
59 Scaling & Request Load Balancing 59
60 Scaling & Request Load Balancing Hours and Wages 60
61 Scaling & Request Load Balancing 61
62 Scaling & Request Load Balancing Application-Level Load Balancing with Stateless Logic 62
63 Scaling & Request Load Balancing Application-Level Load Balancing with Stateless Logic 63
64 Scaling & Request Load Balancing Application-Level Load Balancing with Stateless Logic 64
65 Scaling & Request Load Balancing Scaling Databases - Replication 65
66 Scaling & Request Load Balancing Scaling Databases - Replication 66
67 Scaling & Request Load Balancing Scaling Databases - Replication 67
68 Scaling & Request Load Balancing Scaling Databases - Replication 68
69 Scaling & Request Load Balancing Scaling Databases - Replication 69
70 References Building Scalable and High-performance Java Web Applications by Greg Barish, Addison Wesley Building Scalable Web Sites by Cal Henderson, O Reilly Books Gregor Roth, Server load balancing architectures, JavaWorld, October 2008 http: // 70
71 Next Big Data: Challenges and Opportunities 71
72 72
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