INSERT is really slow - I can only do few dozen INSERTs per second http://www.sqlite.org/faq.html#q19 Actually, SQLite will easily do 50,000 or more INSERT statements per second on an average desktop computer. But it will only do a few dozen transact…

Regular expressions are powerful, but with great power comes great responsibility. Because of the way most regex engines work, it is surprisingly easy to construct a regular expression that can take a very long time to run. In my previous post on reg…

原文地址:http://www.tocker.ca/2013/10/24/improving-the-performance-of-large-tables-in-mysql.html Today I wanted to take a look at improving the performance of tables that cause performance problems based largely on their size. Some of this advice also ap…

https://cloudxlab.com/blog/real-time-analytics-dashboard-with-apache-spark-kafka/…

[自己的解决方案]数据量大时,可显著提升用户使用体验! 1.Root ListView 参考官方的E1554 点击导航菜单后首先跳出查询条件设置窗体进行设置 可设置查询方案或查询方案的查询条件,排序字段.排序方向,是否只查询前1000条. 2.LookupListView 可设置 TopReturnedObjects = 600 3.Code:http://pan.baidu.com/s/1o8MVKkq  密码:qfmv [官方方案] https://www.devexpress.com/Su…

Ensemble Methods for Deep Learning Neural Networks to Reduce Variance and Improve Performance 2018-12-19 13:02:45 This blog is copied from: https://machinelearningmastery.com/ensemble-methods-for-deep-learning-neural-networks/ Deep learning neural ne…

本文转自:http://entityframework.net/improve-ef-add-performance When you overuse the Add() method for multiple entities, your application suffers from performance issues.           1 using (var ctx = new CustomerContext()) 2 { 3 foreach(var line in lines)…

如何提高深度学习性能 20 Tips, Tricks and Techniques That You Can Use ToFight Overfitting and Get Better Generalization How can you get better performance from your deep learning model? It is one of the most common questions I get asked. It might be asked as: H…

在给ImageBrush绑定动态图片是会报以下错误. Error    4    The provided DependencyObject is not a context for this Freezable. Parameter name: context   MSDN 中是怎么说的呢? A Freezable is a special type of object that has two states: unfrozen and frozen. When unfrozen, a Fre…

Features Pricing Add-ons Resources | Log in Sign up   Guides & Tutorials Web Server Guides Nginx How to Configure Nginx for Optimized Performance   How to Configure Nginx for Optimized Performance Updated Wednesday, September 9th, 2015 by LinodeContr…

As we’ve seen, the performance of the garbage collector is not determined by the number of dead objects, but rather by the number of live ones. The more objects die, the faster garbage collection is. If every object in the heap were to be garbage-col…

转自:http://www.alexecollins.com/spring-boot-performance/ 官方优化文档: https://spring.io/blog/2015/12/10/spring-boot-memory-performance SPRING BOOT PERFORMANCE This is an article on how to improve the performance of Spring Boot applications. I've recently b…

http://java.dzone.com/articles/performance-tuning For most typical Spring/Hibernate enterprise applications, the application performance depends almost entirely on the performance of it's persistence layer. This post will go over how to confirm that…

DesktopGood performance is critical to the success of many games. Below are some simple guidelines for maximizing the speed of your game's graphical rendering. 好的性能,是很多游戏成功 的关键.下面是一些简单的指引,最大限度地提高你的游戏图形渲染速度. Optimizing Meshes 优化网格You only pay a render…

https://msdn.microsoft.com/en-us/library/ff647787.aspx Retired Content This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that we…

Java Performance Optimization by: Pierre-Hugues Charbonneau reference:http://refcardz.dzone.com/refcardz/java-performance-optimization Java is among the most widely used programming languages in the software development world today. Java applications…

原文地址:http://www.codeproject.com/Tips/1023621/SQL-Performance-Improvement-Techniques This article provides various options to improve the performance in database. 1) Re-Write Query: If any query is taking much time to execute then the first step is to…

Use Prerender to improve AngularJS SEO Nuget Package of ASP.NET MVC HttpModule for prerender.io: Install-Package DotNetOpen.PrerenderModule Source Code of ASP.NET MVC and ASP.NET Core Middlewares for prerender.io:  https://github.com/dingyuliang/prer…

ORCFILE IN HDP 2: BETTER COMPRESSION, BETTER PERFORMANCE by Carter Shanklin   The upcoming Hive 0.12 is set to bring some great new advancements in the storage layer in the forms of higher compression and better query performance. HIGHER COMPRESSION…

http://access.feld.cvut.cz/view.php?cisloclanku=2009060001 Vydáno dne 02. 06. 2009 (15123 přečtení) This paper presents the comparative study of performance of four pitch detection algorithms. The algorithms have been evaluated with a speech database…

官方文档 使用 Lint 改进您的代码 [Improve your code with lint checks] 除了[In addition to]测试 Android 应用以确保其符合功能要求[meets its functional requirements]外,确保代码不存在结构问题[structural problems]也是非常重要的.结构混乱[poorly structured]的代码会影响 Android 应用的可靠性和效率[impact the reliability and…

http://msdn.microsoft.com/en-us/library/windows/hardware/jj248719.aspx This guide describes important tuning parameters and settings that you can adjust to improve the performance and energy efficiency of the Windows Server 2012 operating system. It…

This section provides solutions to some performance problems, and describes configuration best practices.   Important: If you are running CDH over 10Gbps Ethernet, improperly set network configuration or improperly applied NIC firmware or drivers can…

Latest SQLite binary for January 2015 Well I went through quite a few threads to find an updated, decent sqlite binary. Didn't find any that met that criteria. So I compiled one. Here's SQLite 3.8.7.4 combined into a single source file (the amalgamat…

转自:https://cube.dev/blog/high-performance-data-analytics-with-cubejs-pre-aggregations/ 可以了解 Pre-Aggregations的处理流程 This is an advanced tutorial. If you are just getting started with Cube.js, I recommend checking this tutorial first and then coming bac…

Measuring is extremely important, without numbers we don’t know about potential problems and we don’t have a base we can improve upon. Performance Budgets are a way to impose limits on metrics that may affect our app’s performance. In this lesson we’…

 批处理读写SQLite数据库.bat:(编码ANSI) @echo off sqlite3 "F:\improve\SQLite\BAT\Test.db" <"F:\improve\SQLite\BAT\schema.sql" pause schema.sql:(编码UTF-8) .header on .mode column select * from COMPANYUTF-8 Test.db:  运行结果: 需要先安装sqlite3:https://ww…

Awesome系列的.Net资源整理.awesome-dotnet是由quozd发起和维护.内容包括:编译器.压缩.应用框架.应用模板.加密.数据库.反编译.IDE.日志.风格指南等. 算法与数据结构(Algorithms and Data structures) Algorithmia - Algorithm and data-structure library for .NET 3.5 and up. Algorithmia contains sophisticated algorithms…

New Features, Feature Enhancements and Behavior ChangesSubforms – Behavior Change for Unsupported Task ModeStarting with this version, if an Online task that is running in a Subform control cannot be executed, the task and the host task will remain o…

具体见:https://github.com/thangchung/awesome-dotnet-core 半年前看到的,今天又看到了,记录下. 框架类: ZKWeb ABP General ASP.NET Core Documentation - The official ASP.NET Core documentation site. .NET Core Documentation - Home of the technical documentation for .NET Core, C#…