dynamodb performance

PHP Performance Analysis and Experiment-macro performance analysis (1) Editor's note]I have read a lot of articles on PHP performance analysis before, but I have written a single rule, and these rules have no context, there is no clear experiment to reflect the advantages of these rules, and the discussion also focuses on some grammar points. This article will c

Is your J2EE application running slowly? Can they withstand rising traffic volumes? This article describes how to develop high-performance and highly elastic JSP pages and Servlet performance optimization technologies. It means to build as fast as possible and adapt to the increasing number of users and their requests. In this article, I will lead you to learn the proven

Performance Optimization-database optimization and performance optimization database This article optimizes the performance of databases. The principle applies to most databases, including Sqlite, Mysql, Oracle, and SQL server,The index (advantages and disadvantages, categories, scenarios, rules) and transactions are introduced in detail. Finally, some optimizati

May translate wrong or understand the wrong place, I marked out in red, you can in the comments to correct and discuss, I will eventually update to the list, thank you. Content Overview Design Class Checklist Application Series Checklist Database Server Checklist Overview This is a checklist for improving the performance and scalability of. NET applications that can help you apply this information to your actual actions (this sentence is too lo

follows:Vertical Sync VSync: Let the graphics card's operation and display refresh rate consistent to stabilize the output picture quality. It tells the GPU to wait for the screen drawing to finish before loading a new frame. The following three images are what happens with GPU and hardware synchronization. ①refresh Rate: The number of times the screen is refreshed in one second, as determined by the hardware, such as 60Hz. ②frame Rate:gpu The number of frames for a second drawing operation, fo

First of all, what are the reasons for the performance of PHP that is affected by this problem? That is 1 What happens when PHP performance issues occur? Improper use of 1php syntax (including certain services can be handled using PHP's own functions) 2 Use PHP language to do what it is not good at 3 in the PHP language linked to the server doe

Advanced jQuery skills-performance optimization, jquery Performance OptimizationIntroduce jQuery library through CDN (Content Delivery Network) The simplest step to improve the performance of javascript on the website is to introduce the latest jQuery library. The new version usually improves the performance and fixes

Throughout the performance testing process, monitoring plays a vital role. After the performance test starts, you need to observe in real time whether all the indicators of the performance test are normal, including application servers, databases, and middleware. Once exceptions are detected, the system can be corrected in time to ensure smooth

Store data outside the database or file system to improve the performance and performance of the report system. In report applications, the proportion of reports queried for historical data is large. Such reports have the following features: first, the data changes are small, and the queried historical data is almost unchanged. Second, A large amount of data increases with the time span. If the data is alwa

Observe Linux performance and Linux PerformanceAnalyzing linux performance can help us solve Application Problems, adjust the system architecture, and optimize products. First, let's look at the Linux system structure.The above user domain is called by the system, and the following is the kernel domain.The basic performance monitoring tools in Linux are as follow

PHP performance optimization (php. ini), performance optimization php. ini Chapter 1 Optimization of excessive system callsMy Optimization Aimed at too many syscall calls, so I used strace to track apache for analysis. 1. apache2ctl-X Use the-X (debug) parameter to start the httpd process. At this time, only one httpd process is started.2. ps-ef | grep httpdFind the pid that requires strace3. strace-p $ PID

ArticleDirectory Advantages of performance management Performance management is a management method for strategic monitoring of a company's performance. It includes methods, processes, systems, matrices, and application software for managing and monitoring a company's business performance. Business

MySQL batch SQL insert performance optimization details, mysql Performance Optimization For some systems with a large data volume, the database faces problems in addition to the low query efficiency, but also the long data warehouse receiving time. Especially for the report system, the time spent on data import may be several hours or dozens of hours every day. Therefore, it is meaningful to optimize the da

10 simple Java performance optimizations and java performance optimizations Recently, the word "full domain (Web Scale)" has become popular, and people are also scaling their application architecture to make their systems more "full domain ". But what exactly is a full domain? Or how to ensure full domains?Different aspects of Scaling Scaling load is the most widely used domain. For example, systems that su

Android performance optimization and Android Application Performance OptimizationGoogle Performance Http://developer.android.com/intl/zh-cn/training/articles/perf-tips.html This article mainly involves some minor optimizations. Combined use can improve the overall performance of the App, but does not significantly impr

What about High Performance? What about high performance? There are a lot of stories in the garden about high performance, high concurrency, and the construction of a daily pv architecture. In fact, it is really nonsense. For most applications, to achieve high performance, we need to minimize network requests (includin

SVG vectors are far superior to PNG bitmaps in terms of image expressiveness, and are much more convenient for maintainability and modification than bitmaps. Although Android introduced the SVG image solution in version 5.0: Vector. However, compatibility and performance are so poor that it has not been widely used so far.This blog to bring you a relatively good solution: Svg-android (the author is I ...) Compared to vectors, it is compatible with mor

Label:An index is a data structure that the storage engine uses to quickly find records. Index optimization is the most effective way to optimize query performance. Indexes can easily improve query performance by a few orders of magnitude. Creating an optimal index often requires rewriting the query.5.1 Index BasicsIn MySQL, the storage engine first finds the corresponding value in the index and then finds

Tags: Disk IO 1.3 View folder 2.4 line performance baseline ideas1.1 Common recommendations1.1.1 A lot of notes (record Everything)One of the important things to do when doing performance tuning is to record everything, including the results of each output and execution. You can create a new folder and then plug the resulting files into that folder. Include the following: Documentation of hardware/softw

Summary of some important MySQL performance indicator calculation and optimization methods, mysql performance indicator 1 QPS calculation (queries per second) For databases dominated by MyISAM Engines MySQL> show GLOBAL status like 'questions';+---------------+------------+| Variable_name | Value |+---------------+------------+| Questions | 2009191409 |+---------------+------------+1 row in set (0.00 se