redis performance tips

following command: Db2 "update monitor switches using sort on" Then, let the application run for a while, and enter: Db2 "get snapshot for database on DBNAME" Based on this output, you can calculate the number of sorting tasks for each transaction, and calculate the percentage of sorting that overflows the memory that can be used for sorting. SortsPerTransaction = (Total Sorts)/(Commit statements attempted + Rollback statements attempted) PercentSortOverflow = (Sort overflows * 100)/(Total sort

some code that can be used to parse the ISO-8601 date string, and simply rewrite it to use it.Well, just use C to make it look good, but do you believe that we have a better plan!If you can control the date format you are working with, try to choose a Unix timestamp. You can easily convert from timestamp to NSDate:-(nsdate*) Datefromunixtimestamp: (nstimeinterval) timestamp {return [nsdate Datewithtimeintervalsince1970:timestamp]; }This will be faster than using C to parse the date string!It is

Like all relational databases, MySQL seems to be an elusive monster. It will stop at any time, limit the application to stagnation, or put your business at risk.In fact, many of the most common errors are hidden behind MySQL performance issues. In order to ensure that your MySQL server is always running at full speed, it is important to provide consistent performance and eliminate these errors. However, the

This article provides ten steps to immediately improve the performance of your script. Don't worry. This is not an advanced technique. Everyone can use it! These skills include: Use the latest version Merge and minimize scripts Replacing each with Replace class selector with ID Specify the front and back text for the selector Create Cache Avoid DOM operations Avoid using concat () and use join () to process long strings Returns fal

enterprise applications to their specific business needs.Database replication and sharding are good ways to improve throughput, and you should be able to leverage these tested architectural patterns to extend your enterprise applications.ConclusionThe high-performance data access layer must respond to the underlying database system. Understanding the internal workings of relational databases and the data access framework in use can make a difference

Skills | performance Introduction Performance is a feature. You must design the performance beforehand, or you will have to rewrite the application later. That is, what are the good strategies to make activeserverpages (ASP) application performance the best? This article describes the techniques for optimizing ASP appl

PHP code performance optimization tips. PHP code Performance Optimization 1. do not just copy Variables. sometimes, to make PHP code more clean, some new PHP users (including me) will copy the predefined variables to a name that is simpler. PHP code Performance Optimization 1. do not copy variables at will Sometimes,

When developing IOS applications, it is critical to ensure the program has good performance. This is what users expect. If your program runs slowly or slowly, it will lead to negative feedback from users. However, due to the limitations of iOS devices, it is difficult to achieve good performance. There are many things to remember during the development process, and it is easy to forget about the

and reduce the data transmission volume by 80%.43. When file_get_contents can be used to replace file, fopen, feof, fgets, and other methods, try to use file_get_contents, because its efficiency is much higher! But pay attention to the PHP version of file_get_contents when opening a URL file.44. Perform as few file operations as possible, although PHP file operations are not efficient.45. Optimize Select SQL statements and perform Insert and Update operations as little as possible.46. Try to us

Recently in the process of ybsoftwarefactory upgrade, has been basically completed, and now will use some of the Web Api and MVC performance improvement of some of the tips to summarize, these techniques in use, configuration is quite simple, but usually can greatly improve the performance of the application, Hope to be useful to everyone.First, the cacheIn order

Original addressMySQL is a powerful open source relational database management system (RDBMS). It was posted on 1995 (20 ago). It uses Structured Query Language (SQL), which may be the most popular choice in database content management. The latest MySQL version is 5.6.25, released on May 29, 2015.An interesting fact about MySQL is that its name comes from the daughter "My" of Michael Widenius (the founder of MySQL). Although there are many interesting rumors about MySQL, this article is mainly t

Indexes and error-proof mechanisms exist on the surface of a database table, but a simple query can take a long time. Web applications may run well in the development environment, but they behave equally poorly in a production environment. If you are a database administrator, you are likely already experiencing this situation at some stage. Therefore, this article will describe the techniques and tips for optimizing MySQL

the client. If the exception is not handled properly, you will lose data. Below we will simulate the presentation of an exception by sending more than 10 block requests (the queue value is set to 10).Remotetransportexception[[Summary: The configuration properties of ES are essential for its flexibility and scalabilityThe deeper the elasticsearch of the configuration items, the greater the benefit of loggly, because in our use case, ES's design parameters have been used to the extreme (and somet

jquery Performance Tuning 28 tips have been looking for tips on optimizing jquery performance to make my bloated dynamic web apps lighter. After looking for a lot of articles, I decided to list some of the best and most common recommendations for optimizing performance. I al

advantage of, you will not be able to use other application resources efficiently by loading and resizing.　　8 : Using Hierarchy Viewer Tools　　Hierarchy Viewer tools can help you debug your application layout. It also provides valuable analysis information to understand how much time it takes to measure, render, and draw each view control within a layout. It is easy to solve the problem only if you find the root of the problem accurately. 　　9 : Using layoutopt Tools　　layoutopt tool is a simple c

This article will share with you five tips for optimizing and improving the performance of PHP7. if you are interested in improving the performance of php7, you can learn more. PHP7 has been released as the biggest version upgrade of phpin the past 10 years, for the biggest performance upgrade, PHP 7 has shown signific

The following articles mainly introduce several tips for optimizing MySQL database performance, including selecting the most suitable field attribute and using JOIN) instead of subqueries (Sub-Queries), UNION is used to replace the content of the temporary table created manually. MySQL database performance optimization 1. select the most suitable field attribute

Tips for improving Code Performance-taking the creation of thousands of rows of tables as an example, an important part of Microsoft's development cycle is to adjust the product performance. Performance adjustment is also a key part for developers to pay attention. After years of development, the industry has learned a

) to control proceduresBecause of the large loss of performance, it is best not to use exceptions to control the process.11. Use the ToString method of the value type to avoid boxing operations.Because value type to reference type can cause performance loss, using the ToString method of the value type avoids the performance loss caused by boxing.12, avoid the abu

This article focuses on in-depth introduction to jQuery's performance optimization techniques. If you need it, you can refer to the following tips to improve jQuery's performance optimization: Cache variableDOM traversal is expensive, so we try to cache elements that will be reused. The Code is as follows: // BadH = $ ('# element'). height ();(('{Element'{.css