Diagnosing. NET application memory leaks using. NET Memory Profiler (methods and practices)
Blog Categories:Troubleshooting tuning. NET asp.net loadrunner ASP algorithm
The application diagnosis and optimization of friends know the memory leak and the harm caused by this situation is generally difficult to analyze and locate, especially in. Net/java applications, implicit heap memory management and complex referential relationships between managed o
Http://www.open.collab.net/nonav/scdocs/SVNIntro
Subversion Best Practices
Help IndexUsing Subversion Subversion basic research source code detection source Subversion client Subversion Best practices Advanced Subversion URL structure WebDAV and Subversion character encoding management Su Bversion Subversion access control Subversion user authentication support project Management Subversion activity repor
performance optimization, resulting in additional maintenance costs, such as introducing new bugs, additional memory overhead, and so on. Performance optimization often requires trade-offs between benefits and costs.
How to discover performance bottlenecks
The first step in performance optimization is to discover performance bottlenecks, and here are some practices for locating performance bottlenecks.
· How to get memory consumption
The followin
bring delays or limitations to the successful processing of the stream. Although some interactions may be asynchronous or "disposable" (Fire and forget), other interactions will be synchronized, and they need to be completed before subsequent operations can begin. In both cases, the transaction may have to queue up and consume device resources to wait for the event to complete. The DataPower hardware platform provides faster interfaces, expanded memory, and faster CPUs, which in extreme cases m
Tags: des style blog http color io using AR dataATITIT.HBNT ORM DB new update best Practices o991. Merge with a save . 12. The POJO object is in a free State, a persistent state, and a managed state. Use the merge() condition. 13. @DynamicInsert @DynamicUpdate 24. Actual call to merge() generated SQL 25. Reference 21. Mergewith aSavethe.UpdateUpdateorsave has not recommended ...The resulting black boss has a merge and a save ...2. POJOThe object i
Use the Mongotemplate template provided by spring data MongoDB for aggregation operation practices
public class Flowsizeaggregatetest{public static void Main (string[] args) throws Exception{ApplicationContext context = new Classpathxmlapplicationcontext ("Classpath*:meta-inf/spring/*.xml");Mongotemplate mongotemplate = (org.springframework.data.mongodb.core.MongoTemplate) context. Getbean (Mongotemplate.class);Criteria =Criteria.where ("UserName").
Definition of open closure principle
There are two different definitions of the principle of openness and closure, namely the most primitive definition of the the 1980s and a more modern definition of the latter, which is elaborated in more detail in the former.Definition of Meyer
Software entities should allow extensions, but prohibit modification
--"Object oriented Software construction"
Martin's definition
"is open for extensions. "This means that the behavior of the module
Below are some Microsoft application blocks, some common. NET components, which are very powerful.
Microsoft?Patterns PracticesFor application architecture and design include reference ubuntures and application blocks. Here is a list of suchPatterns PracticesFor application architecture and design.
The complete list of patterns PracticesArchitectural topics
Application Architecture for. Net: designing applications and services (patterns practices
, startactivityforresult, requestcode, resultcode, finish, and onactivityresult 2. Implicit intent profiling: Action, category, data (Uri (schema, host, PATH), and data type (mimetype )) 3. Problems Caused by settype () and the best solution 4. Display intent and implicit intent usage scenarios, usage meanings, and advantages and disadvantages. 5. thoughts on how to encourage decoupling in Android 1.8 Handler,Logoff,Message,Messagequeue(60Minutes) 1. Android event-driven model 2. In-depth
Face the reality: team changes
In the past few years, I have worked with many teams, some of which are long and some are short. I have noticed that all of these teams face the same problem, that is, the team members are always changing. In general, changes behind any project lead to such changes: for example, employees are sick or on vacation, project demand increases, and new projects or only employees want to change their current jobs. However, agile pract
In. NET Framework 2.0, the membershipprovider class roleprovider class is provided for our applications.
Program Provides authentication and authorization services .. Net Framework 2.0 provides sqlmembershipprovider and roleprovider implemented based on SQL Server by default. To use membership implemented based on other databases, you must implement membershipprovider and roleprovider by yourself.
In nhib.pdf, you only need to modify the configuration file to support multiple databases. If nhib
system after the partition is complete, use the mkfs command to specify the type of the format file system:[root@archlab-server2 /]# mkfs -t ext4 /dev/sdc2Mount PartitionAfter adding and formatting a partition, go to the final step and mount the partition to the /var/atlassian directory with the following steps:
will be /dev/sdc3 mounted to a temporary directory, such as/home/tmp
To /var/atlassian /home/tmp free up space by cutting all files under the directory /dev/sda2
Will
Add View Object
3.3.4 creating templates, writing HTML codeWe create the index.html under Resources/templates, the code is as follows:Start debugging, in Browser input: http://localhost:8080/The effect is as follows:Related Code github:https://github.com/vipstone/springboot-example.gitIv. referencesThymeleaf Official Document Thymeleaf:https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.htmlThymeleaf Official documents Spring + thymeleaf:https://www.thymeleaf.org/doc/tutorials/3.0/
", "C", "D", "E"}); 7. Put the supplied array elements into a string // containing the provided list of elements // Apache Common lang String j = stringutils.join (new string[] {"A", "B", "C"}, ","); System.out.println (j); // A, B, C 8. Converting an array list to arrays String[] Stringarray = {"A", "B", "C", "D", "E" }; ArrayListNew arraylist(arrays.aslist (Stringarray)); New string[arraylist.size ()]; Arraylist.toarray (Stringarr); for (Str
1. Best PracticesCode conventions from other languages can be used to decide when to comment and how to indent, but JavaScript needs to create special conventions for its loosely typed natureL JavaScript should define behavior, HTML should define content, CSS should define appearanceThe confusion in these responsibilities can lead to errors and maintenance problems that are difficult to debug• The events that JavaScript takes to execute directly affect the performance of the Web pageL DOM Intera
,ibatis. The performance problems of ORM framework can be solved by detailed configuration.11. Split infrequently used data tables into different physical storage for better performance.12, for the key database, the use of secure backup system, such as cluster, synchronization and so on13, the use of foreign keys, non-empty and other restrictions to ensure the integrity of the data, do not throw all the things to the program; But for Internet applications, the environment should reduce the use o
10Nb_get_retry 3Delay_before_retry 3Connect_port 8888}}Real_server 192.168.1.107 8888 {#指定real_server2的ip地址Weight 3 #配置节点权重Tcp_check {Connect_timeout 10Nb_get_retry 3Delay_before_retry 3Connect_port 8888}}}Save Exit,Open keepalived ServiceService keepalived StartView status Ipvsadm-l-NConfigure LVS from the server (another LVS)Apt-get Install keepalivedThe configuration from the server is roughly the same as the primary server, to change the state from master to backup in keepalived.confChange
-juli.jar-dcatalina.base=/opt/apache-tomcat-8.0.32- Dcatalina.home=/opt/apache-tomcat-8.0.32-djava.io.tmpdir=/opt/apache-tomcat-8.0.32/temp Org.apache.catalina.startup.Bootstrap start Back to the point, then, is it possible to specify profile by this form? The answer is yes.Modify the Tomcat startup script to modify java_opts directly:java_opts= "-xms1024m-xmx1024m -xx:permsize=512m-xx:maxpermsize=512m-dspring.profiles.active=test"Starting Tomcat and discovering that the entire system was start
descriptionShmaddr is in Null,linux and will automatically connect to that memory for the process (recommended)SHMADDR is not null and SHMFLG has no shm_rnd tag, the SHMADDR is the connection address.SHMADDR is not null and SHMFLG sets the shm_rnd tag, the connected address is automatically adjusted downward to an integer multiple of Shmlba. Formula: shmaddr-(shmaddr% Shmlba)shmflg=shm_rdonly, indicating that the connection operation is used for read-only shared memoryExample 1int Main () {
, and the leaf node object gives real feedback on the message.In strategy mode 3, the context does not have the ability to execute the algorithm, but instead delegates this responsibility to a policy object. Each policy object is responsible for the algorithm that has been encapsulated inside the object. When we issue a "computed" message to these policy objects, they return their respective computed results.1. See chapter 9th, "Command mode" 2. See chapter 10th, "Combinatorial Mode" 3. See chap
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