Comments (3)
GourdErwa
commented on July 24, 2024
- cache 可预借时间，吞吐量可大于序列最大值
- 你说的位移完成，怎么完成呢，读可以控制为非并发，写肯定要并发的，位移如何保证并发
from uid-generator.
gearcode
commented on July 24, 2024
我也不太明白，是否因为默认时间粒度为秒，导致每秒内的并发度非常高，所以需要ringbuffer？
我以前一直用毫秒的，sequence原子类型自增就好了，这样性能也不差吧？
from uid-generator.
DanielFeb
commented on July 24, 2024
并发很高的情况下，如果没有buffer，一个变量自增，cpu cache line的写冲突会很严重。 而且像 CAS 这种机制适合冲突较少的情况，如果太多线程在同时自旋，那么长时间循环会导致 CPU 开销很大。
from uid-generator.
Related Issues (20)
- There is a vulnerability in spring 4.2.5.RELEASE,upgrade recommended
- There is a vulnerability in logback 1.1.3,upgrade recommended
- Synchronized DefaultUidGenerator & ParallelGenerate
- 压测的具体操作方法能麻烦提供一下
- 64位虚机里 CacheLine 填充过长问题 HOT 1
- 中文文档里的sql建表语句执行报错 时间字段需要设置默认值
- 总共没几条sql,建议直接使用jdbc,不要在使用mybatis等框架 HOT 2
- 控制台日志频繁打印 HOT 1
- 请问该项目是不再维护了吗
- A component required a bean of type 'com.github.wujun234.uid.impl.CachedUidGenerator' that could not be found. HOT 1
- 为啥不把delta seconds和worker id换个位置？ HOT 1
- AtomicLong.updateAndGet()超级费CPU，并发一多就100% HOT 1
- 这个吞吐量怎么算出来的？
- BufferPaddingExecutor中的lastSecond的疑问
- 报错 UidGenerateExption ：java.RuntimeExecption ：Rejected take buffer . RingBuffer [bufferize=65536,tail=65536,cursor=65536,paddingThreshold=32768] HOT 5
- 机器 id，最多可支持约 420w 次机器启动 HOT 2
- 时间戳运算代码是不是写错了 HOT 1
- 有没有升级为springboot版的 HOT 1
- No qualifying bean of type 'com.github.wujun234.uid.UidGenerator' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@jakarta.annotation.Resource(shareable=true, lookup="", name="", description="", authenticationType=CONTAINER, type=java.lang.Object.class, mappedName="")}
- 什么时候出个go语言版本的
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from uid-generator.