This section is compiled knowledge exam usually will not be used
First point: performance-related
Concurrent users : a user refers to the physical time submit a request to the system
Online users : refers to the user access to the system within a certain period of time, these users need not submit a request to the system
Load testing: a real environment simulation system performance tests, assessment system meets the requirements in daily business operations and performance during peak operation
Point pressure test the performance limits of the analog system performance tests, performance bottlenecks point to discover
Stress test object 1, registered in the real environment detection performance, as well as the server meets the performance evaluation system, the two expected system load pressure tolerance, before applying the actual deployment, the performance evaluation system, analysis system bottleneck optimization system 3
The application server key indicators: operating system metrics buffer status, connection pooling, perform queue
Database server: the operating system metrics, the amount of memory cache hit ratio, cpu process takes time database, the database used in the process, lock resource usage
Response time in accordance with the principle of 3,5,8
Server Transaction Processing Performance indicators: cpu usage, memory usage, the number of switching processes per second
Client Transaction Processing Performance indicators include: the number of concurrent users, transaction processing indicators, web request index and web page components Index
Performance test , a maximum amount of two concurrent storage shelf life of 3 4 5 scalable remote backup configuration and whether the key part 6 scalability dual disk mirroring and hot standby
The present system performance bottleneck may include : an application server of physical memory is not enough, less than 2 cpu performance database server, the database 3 or not design optimization problem without using a suitable program module 4 concurrency / parallel server network bandwidth is insufficient Policy 5
Observation indicators: cpu, memory, hard disk
The second point: Testing Technology
Category : application load stress testing, network testing (testing application is the real significance of network testing), security testing and evaluation, compliance testing, standards compliance (various national standards), usability testing, reliability
Ease of use : The software product is understood, learn, use, and ability to attract users
Reliability : refers to the ability of the product within the specified time and complete the required function under specified conditions
compatibility with web applications : browser compatibility, operating system compatibility, compatible mobile terminal, print a test
The third point: the complexity of the analysis program
Basic Path Method
if，for ，do……while ， while……do