improve linq query performance

30th-Improving performanceThis chapter will review some of the key points related to MySQL performance.30.1 Improving performanceDatabase administrators spend a considerable portion of their lives tuning, experimenting to improve DBMS performance. Poorly performing databases (and database queries) are often the most common culprit in diagnosing sluggish behavior

a condition, then the efficiency of the query will improve. Let's check it out: Here we assume the query 100,001th data, the amount value of this data is: 2399927, we write two statements are as follows: Db.test.sort ({"Amount": 1}). Skip (100000). Limit () //183msdb.test.find ({amount:{$gt: 2399927}}). sort ({" Amount ": 1}". Limit (Ten) //53ms The results ha

worry about the impact of performance. To maximize caching in your applications, you should consider ways to implement caching at all program levels. Steve's Caching Tips ? Cache as early as possible; You should implement caching at every level of your application. Add caching support to the data tier, business logic tier, UI, or output layer. Memory is now very cheap-therefore, a great performance impro

information, comment-set the blog post itself-for inference, it can be seen that 10-20 database queries and formatting may be required to display the content of the home page. This process is repeated every day for hundreds or even thousands of pages, so the queries executed by your servers and applications are much more than the ones required to display the page content. By using memcached, you can store the formatted Information loaded from the database as a format that can be directly used o

backup on the normal operation of the database. Typical application 4: Sorting large tables We all know that when there are many records in the table, the query speed will be slow. After the first query is successful, it still takes so much time to re-Sort it for the second time. For this reason, when we design a database, we usually place such a large table object in an independent tablespace to

In web applications, a large amount of Javascript is applied, so code execution efficiency becomes particularly important, that is, performance! To improve JS performance, we should master some basic performance optimization methods and make them the habit of writing code. The following describes several ways to optimi

I would like to share several methods to improve MYSQL performance, which are not comprehensive enough. I hope you can add them! Please make a picture of the error! 1. database/table sharding Obviously, the unlimited growth of a primary table (that is, a very important table, such as a user table) will inevitably seriously affect performance. Database sharding an

Use libevent and libev to improve network application performance Use libevent and libev to improve network application performance Manage multiple UNIX Network ConnectionsMartin C. Brown, writer, FreelanceMartin Brown has been a professional writer for more than eight years. He is the author of a wide range of boo

can be seen that 10-20 database queries and formatting may be required to display the content of the home page. This process is repeated every day for hundreds or even thousands of pages, so the queries executed by your servers and applications are much more than the ones required to display the page content. By using memcached, you can store the formatted Information loaded from the database as a format that can be directly used on Web pages. In addition, because the information is loaded fro

more available cache, it is likely to improve the performance of applications with multiple users. How can I disable memcached? Although memcached is simple, memcached instances are still incorrectly used. Memcached is not a database The most common misuse of memcached is to use it as a data storage instead of a cache. The primary purpose of memcached is to speed up data response time. Otherwise, it

After months of research and development, the open source multi-model database Arangodb finally released its 3.2 full version, which eliminates two major hurdles, adds a long-awaited feature, and integrates an interesting feature. In addition, the official team said the new version increased the performance of Arangodb by an average of 35%. Also, the memory footprint is reduced compared to version 3.1. There have also been significant improvements in

the order amount of each customer are collected again according to the combined history and the aggregated data of the current period.3. Call the Set calculation script in the collection report, edit the report expression to complete the report productionThrough the above process can be clearly seen, the set of the report can be a good solution for the past period (+ when) data query often have a low performance