Env. OS:macOS Mojave Version 10.14.5(centOS have same problem) Springboot:2.1.6.RELEASE(embedded tomcat 9.0.21),war I am a new player of Spring Boot, which I think is helpful to build my project. Now I have finish my work with it, but a strange phenomenon…
I am trying to work with large 2D arrays in Python, but it's very slow. For example: start = time.time() result = numpy.empty([5000, 5000]) for i in range(5000): for j in range(5000): result[i, j] = (i * j) % 10…
I have a simple select statement without any join. All it does is checking a date_time and some other flags table has about 45.000 entries. The query is performed within a php script every 5 minutes, to send out an…
I have two tables (They are bigger with more of 200,000 rows, this is just an example) Table1:temptable id |Chromosome | Start | End | Reference | Alternative | QUAL | MQ ........................................................................ NULL chr1 12334 12335 A TT 10…
When i use developer tools to analyze the network load times I see that my time to first byte is sometime 8 seconds long when loading the Index.aspx document. My pages are optimized and are never greater than 1.4 megabytes…
I have the following query which gets order data, works fine but takes 13.63 seconds: SELECT ( SELECT meta_value FROM `myprefix_postmeta` as postmeta WHERE postmeta.meta_key = '_sku' AND postmeta.post_id = woocommerce_order_itemmeta3.meta_value ) AS sku, woocommerce_order_items.order_item_name AS title, SUM( woocommerce_order_itemmeta.meta_value )…
I'm working on a toy problem: it is to make code that learns to be unbeatable at Tic Tac Toe only by playing itself. I'm a newbie to this sort of thing... I just decided that I would do it…
so I have a problem with DB migration from one webserver to another. Server 1 has MySQL version 5.6 running under cPanel hosting... Server 2 has MariaDB version 5.5 running under Webmin/Virtualmin PHP version is the same on both of…
I am making artificial intelligence bots for my private server. Their names have to be random and unique, so I made a function that retrieves a random string from a website. it takes a second to generate 3 names and…
I have a PHP script which builds a sitemap (a XML file accodring to the standard sitemap structure). My question is about improving it. As you you, a website has new posts daily. Also post may be edited several times…