B站视频
看完视频后的总结:
语法,语义,语用
B站视频
看完视频后的总结:
Why Disaster Happens at the Edges: An Introduction to Queue Theory
A queue’s performance depends on several factors including:
This suggests an important rule of thumb: for decent quality of performance, keep utilization below 75%.
This means provisioning, not for typical loads but extreme ones. Without overcapacity, queues will form and latency will increase.
The lesson: whatever its source, variance is the enemy of performance.
The question then is what to do about it. It’s basically a trade-off between latency and error rate.
If we don’t return errors, or find an alternative way to shed the excess load, then latency will inevitably increase.
Architecture Takeaways
To sum up: Variance is the enemy of performance and the source of much of the latency we encounter when using software.
To keep latency to a minimum:
It follows that developers should aim to design and implement software that delivers not just high average performance, but consistent performance, i,e, with low variance.
Even an incremental reduction in variance can improve the user experience more than an equivalent increase in raw average speed.
The mean isn’t meaningless. It’s just deceptive.
To transform user experience, the place to put your effort isn’t in the middle of the curve but on the ends.
It’s the rare events — the outliers — that tell you what you need to know.
Distributed cache system design
System Design Interview – Distributed Cache
阅读笔记:Scaling Memcache at Facebook
缓存更新的套路
分布式系统的事务处理
Paper阅读:Scaling Memcache at Facebook
Scaling Memcache at Facebook
实现更高效的缓存 解读TinyLFU算法
Consistent Hashing: Algorithmic Tradeoffs
Understanding Redis in System Design
J2Cache
Write-Ahead Log
复杂度应对之道 – COLA应用架构
代码防腐实用技术
Flink学习–Flink on Yarn
技术分享:Prometheus是怎么存储数据的(陈皓)
程序员修炼之道读书笔记
When you need file storage for your project, website, or application, Web3.Storage is here for you.
万字详文阐释程序员修炼之道
容器日志采集利器Log-Pilot
Java线上问题排查神器Arthas快速上手与原理浅谈
监控日志系列—- Filebeat原理
深入Spring Boot:ClassLoader的继承关系和影响
天涯 kkndme 神贴聊房价
Java Performance Tuning