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Java Performance 培訓
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 班級規模及環境--熱線:4008699035 手機:15921673576( 微信同號) |
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每期人數限3到5人。 |
| 上課時間和地點 |
開課地址：【上?！客瑵髮W(滬西)/新城金郡商務樓(11號線白銀路站)【深圳分部】：電影大廈(地鐵一號線大劇院站) 【武漢分部】：佳源大廈【成都分部】：領館區1號【沈陽分部】：沈陽理工大學【鄭州分部】：錦華大廈【石家莊分部】：瑞景大廈【北京分部】：北京中山學院 【南京分部】：金港大廈
最新開班 (連續班 、周末班、晚班）：2020年3月16日 |
| 實驗設備 |
☆資深工程師授課
☆注重質量
☆邊講邊練
☆合格學員免費推薦工作
★實驗設備請點擊這兒查看★ |
| 質量保障 |
1、培訓過程中，如有部分內容理解不透或消化不好，可免費在以后培訓班中重聽；
2、培訓結束后,授課老師留給學員聯系方式,保障培訓效果,免費提供課后技術支持。
3、培訓合格學員可享受免費推薦就業機會。 |
課程大綱 |
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- Basics and performance measurements
Performance dimensions
The process of creating efficient software
Factors affecting performance
Micro and Macro-Benchmarking
Profiling
Use of tools: JConsole, Java Visual VM, JMC (Java Mission Control), MAT (memory analysis)
Efficient work on files
IO: streams, buffering, RandomAccessFile
NIO: channels, memory mapped files
NIO.2 (introduction): Path, Files
How to increase serialization performance
Working with collections and arrays
Computational complexity - how to choose algorithms
Recursion, iteration and heuristics
Performance for sets, lists, queues, maps
Views and Collections class
Review of multithreaded collections (java.util.concurrent)
Arrays and collections for simple types
JMH - approved microbenchmak framework for Java
Creating JMH project and benchmarks
Configuration, running, results
Concurrent and parameterizable Benchmarks
Traps and advanced elements
Class loading
Class Class, ClassLoader and class loading process
When to control class loading?
Delaying class loading and reducing the number of classes
Reflection and dynamic proxy
Introduction to modules (Java 9)
Memory management in Java
Garbage Collector and object life cycle
Strong, soft, weak and phantom references
Why memory leak occurs and what to avoid in Java
Generations and memory spaces
Tuning Garbage Collector
Types of Garbage Collector: Serial, Parallel, Concurrent, G1
Changes in Java 8 and Java 9
Java Virtual Machine
Client and server modes
Tuning JVM
Performance changes from version to version
Introduction to optimization for HTTP (OPTIONAL)
Problems with server side optimization
Testing with HTTP: HttpUnit, JWebUnit, Selenium
Performance measurements for HTTP: Grinder, JMeter
Additional information about JMeter
Problems with optimization
Micro-benchmarking problems
Premature optimization
Greed
Other bad practices
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