elasticsearch search performance

Create an index for a search field An index is not necessarily a primary key or a unique field. If a field in your table is always used for search, create an index for it. You can see the search string "last_name LIKE 'a % '". One is an index, the other is no index, and the performance is about 4 times worse.In add

The US government is vigorously developing super search tools that significantly surpass Google's performance. This new system not only searches for specific words and phrases in files, emails, and chat room information on the Internet, but also has a unique "concept search function ".Because the information on the Internet is too huge, and traditio

(1). Description Search the browser performance and determine whether the browser has functions, such as checking whether the background music, activexcontrols, and JavaScript scripts are supported. And the current version of the browser. (2). Explanation 1.Code Search browser PerformanceBoolean activexcontrols = Boolean backgroundsounds = Boolean Beta

should be minimized as much as possible, so you can cache the length property in a local variable, which can greatly improve the efficiency of the loop.17. Refactor Most of the cases, the above code can be simplified into:A.js/b.js/c.js is referenced in D.js. Written by the Document.Write method.18, for the large JS object, because the time and space to create the cost is relatively large, so should try to consider the use of caching.19. Put the script at the bottom.Scripts are typically used f

duplicates:0 warnings:05, query:Mysql> SELECT * from user where name= ' user55555 ';+-------+-----------+-------------+| UID | name | Phone |+-------+-----------+-------------+| 55567 | user55555 | 18800055555 |+-------+-----------+-------------+1 row in Set (0.00 sec)mysql> SELECT * from user where name= ' user999999 ';+---------+------------+--------------+| UID | name | Phone |+---------+------------+--------------+| 1000011 | user999999 | 188000999999 |+---------+------------+--------------

At present, many search engines combine the task of organizing the Network information resources through the combination of the key words such as the hierarchical topic catalogue and the keywords provided by the computer retrieval software. Yahoo is the typical representative of this class-style theme-Guide search engine. 　 Yahoo's charm lies in its browsable ranking theme index. Based on the theme of the

at the table, which is the advantage of not drinking, otherwise I expect to wander again in my dream .... Day busy day, for the forum and friends from afar, I still Bing, it is learning.Just, I still hope to get home at night no matter what technical problems, at first forced their own night not to drink alcohol is not to engage in network technology, and not to write code, but want to recharge their electricity. Enrich your own, see history. Wash your heart. For example, you can learn cooking,

Search process of HiPAC High-Performance Rule Matching AlgorithmWhen I received an email, A friend thought I had misunderstood nf-HiPAC. How can such a high-performance algorithm be forced by traditional hash and tree algorithms. Yes, HiPAC is a very powerful algorithm, and there are few documents. This increases the mystery of HiPAC, but it does not mean that it

How does PHP obtain a set of keys in a two-dimensional array (high-performance search ). Share The PHP method to obtain a set of keys in a two-dimensional array. Specifically, for example, the next two-dimensional array is read from the database. Code: $ userarray (0 array: Share the PHP method for getting a set of keys in a two-dimensional array. Specifically, for example, the next two-dimensional array i

ignored when drawing through the lines.If you understand this process, you will find it is super efficient, no backtracking, no need to rely on complex hash algorithm, without relying on the degree of hash hash, and input data independent, how many matches there are how many layers, as to how to maintain the algorithm, that is the implementation of the problem. This is essentially a tree-type data structure, and the trick is in its structure.This article only gives an overview, as for the HIPAC

-mail, and wrote an article, the wife and mother in the "red sorghum" the big ending, little in play ipad, I draw that complex diagram on the table, this is not the benefits of alcohol, or at this time I estimate again in the dream of roaming .... Day busy day, for the forum and friends from afar, I still Bing, it is learning. However, I still hope to get home at night no longer move any technical problems, at first forcing themselves at night no longer drink not to engage in network technology,

count, copy-on-write", that is, even if you copy a variable in PHP, the original form basically actually is still the form of a reference, only if the content of the variable changes, the actual replication will occur, the reason for this is to save the memory consumption purposes, but also improve the The efficiency of replication. Thus, the efficient read operation of foreach is not difficult to understand. Also, since foreach is not suitable for handling array writes, we can draw a knot In m

affected (22.27 sec)Records: 0 Duplicates: 0 Warnings: 0 5,Query: Mysql> select * from user where name = 'user55555 ';+ ------- + ----------- + ------------- +| Uid | name | phone |+ ------- + ----------- + ------------- +| 55567 | user55555 | 18800055555 |+ ------- + ----------- + ------------- +1 row in set (0.00 sec)Mysql> select * from user where name = 'user99999999 '; + --------- + ------------ + -------------- + | Uid | name | phone | + --------- + ------------ + -------------- + | 10000