Questions tagged as 'desempenho'

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Mysql - What is the best index to be created in this case

Hello, I have a table in the database with the historical prices of products. This table is very bulky with more than 1 billion records. How can I create an index in this table, to answer the query below: select cd_produto_price,...
asked by 10.10.2016 / 01:26
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Delay in Massive CodeIgniter ajax processing

My code imports data from one database to another. To avoid server overhead, I'm importing 100 out of 100 records in each ajax. I noticed that in the first requests, it takes about 40ms, but as it sends more requests, the return time grows a lot...
asked by 07.11.2016 / 15:27
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Filter Used and Unused Classes Twitter Bootstrap

I'm importing the bootstrap for a Landing Page, but as the content is little consequently the classes I needed to use are also few. I wanted to know if there is an automated way to filter which classes I'm using and generate a css file with t...
asked by 01.09.2016 / 16:16
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Which html markup for menu, which consumes fewer browser features?

Below is a simplified HTML markup for a menu that I use: <ul> <li><a href="#" title="Teste X">Teste X</a></li> <li><a href="#" title="Teste Y">Teste Y</a></li> <li><a href...
asked by 26.08.2016 / 02:19
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Integrity of running Java application running in long time

I have tested my Desktop application, and I noticed that when I leave running for a long time I notice changes in the behavior of the actions that should be performed. My application runs using Hibernate, and I notice these changes after a fe...
asked by 18.12.2015 / 18:20
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Measure access performance to Android SQLite database

Good afternoon, How can I measure performance of access to SQLite database of Android? More specifically insertion and selection in the bank.     
asked by 03.11.2015 / 20:37
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Query Performance - Postgresql

I have the following situation, I need to bring data from a vehicle table of the system in which I work and another with integrated data of a partner system, because integration is not very consistent data and the way to connect the tables can b...
asked by 29.10.2015 / 12:21
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Are there techniques for reducing memory usage (by development) in using javascript?

I would like to know if there is any technique to reduce memory usage regarding the use of javascript. I mean, about development. I noticed that a certain page that we are developing where I work seems to use a lot of memory, and this is flag...
asked by 10.08.2015 / 18:01
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Difference in performance in the creation of FK MySQL

Does anyone know if there is a difference in bank performance if I create the FKs before the other fields in the table or vice versa? I heard comments that it is ideal to always leave FK's as the first columns of the table, but I have not fou...
asked by 14.03.2014 / 21:13
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Detecting slow queries in Rackspace MySQL

Is there an easy way to see the slow queries in Rackspace's MySQL? I've tried these instructions , but they are very complicated ... Original post in English     
asked by 13.08.2014 / 01:49