high-load

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WorkManager and a high workload

I\'m working on an application which interacts with hundreds of devices across a network. The type of work being committed requires a lot of the concurrent threads (mostly because each of them require[详细]

2023-01-09 14:02 分类：问答
MySQL: how to ensure integrity in multiple read only architecture

Scenario is simple to describe, but might have a complex answer: Imagine a case where you have one write only开发者_开发技巧 mysql database. Then you have about 5 or 6 read only databases. The write[详细]

2023-01-04 20:42 分类：问答
How to store and collect data for mining such information as most viewed for last 24 hours, last 7 days, last 30 days, last 365 days?

Let\'s imagine that we have high traffic project (a tube site) which should provide sorting using this options (NOT IN REAL TIME). Number of videos is about 200K and all information about videos is st[详细]

2023-01-02 08:35 分类：问答
Cost of creating exception compared to cost of logging it

Just wonder how much cost to raise a java exception (or to call native fillInStackTrace() of Throwable) compared to what it cost to log it with log4j (in a file, with production hard drive)...[详细]

2022-12-26 09:59 分类：问答
check whether mmap'ed address is correct

I\'m writing a high-loaded daemon that should be run on the FreeBSD 8.0 and on Linux as well. The main purpose of daemon is to pass files that are requested by their identifier. Identifier is converte[详细]

2022-12-24 12:45 分类：问答
Postgres Tuning and scaling

We have currently a Postgres database with a 100 of tables 20 of them with more than 5 000 000 rows, the master DB server runs on Debian 32MB RAM 8 Processors.[详细]

2022-12-17 22:19 分类：问答
How digg (or other high load category websites) are storing user sessions?

How does digg or any other high-traffic website store user sessions? What do they use for storing the user sessions? F开发者_如何学JAVAile system, DB (which one?), memcache or both?[详细]

2022-12-16 12:45 分类：问答