Forwarded from codedump的电报频道
#博客
上个月写过一篇memcached的文章，最近项目实现了cache库之后，发现很多细节当时理解的并不够细致，于是重新又写了一篇memcached的文章：
https://www.codedump.info/post/20210812-memcached/
这次将slab、分段LRU、读写操作中的锁、安全回收item、hash表的扩容操作等都讲到了，希望以后也不需要再写memcached的文章了。
总体感觉是实现一个多线程安全且高效的cache库还是有不少细节要考虑的，细节是魔鬼。
上个月写过一篇memcached的文章，最近项目实现了cache库之后，发现很多细节当时理解的并不够细致，于是重新又写了一篇memcached的文章：
https://www.codedump.info/post/20210812-memcached/
这次将slab、分段LRU、读写操作中的锁、安全回收item、hash表的扩容操作等都讲到了，希望以后也不需要再写memcached的文章了。
总体感觉是实现一个多线程安全且高效的cache库还是有不少细节要考虑的，细节是魔鬼。
Forwarded from DPS Main
一个很短的TED 演讲，介绍了掌握多门语言对大脑发育的影响。
无论大环境如何，多掌握一门语言，就多一点选择，也就多一点机会。
https://overcast.fm/+SQoLD0
更多精彩内容都在生产力日报 https://letters.acacess.com/#/portal/account/plans
无论大环境如何，多掌握一门语言，就多一点选择，也就多一点机会。
https://overcast.fm/+SQoLD0
更多精彩内容都在生产力日报 https://letters.acacess.com/#/portal/account/plans
overcast.fm
The benefits of a bilingual brain | Mia Nacamulli — TED Talks Daily
It’s obvious that knowing more than one language can make certain things easier — like traveling or watching movies without subtitles. But are there other advantages to having a bilingual (or multilingual) brain? Educator Mia Nacamulli details the three types…
Forwarded from 前女友们用过的机场—始于机场，不止机场 (蛇佘🐍|今天也喜欢佘姐)
#线路介绍
安畅 云联网CloudLink
官方简介：云联网（CloudLink）基于SDN和高质量传输网络构建的云交换平台，实现多服务商（公有云、ISP、IDC）与用户间的快速互联互通，为企业提供安全、中立、开放的网络连接服务及灵活搭建IT基础架构的能力。
点评：安畅的CN2机房很有名了。。。第一次知道到安畅专线业务被机场使用还是很新鲜的
相关机场：
EXFLUX：全线内网线路
Bywave：全线内网线路
跑路云：BGP节点为内网线路
星梦数据：IEPL节点为内网线路
NyanCAT：被DDOS了大半年，关闭注册
东方网络：深港专线
Dler Cloud：日本GAMER为无锡日本专线，限速2M
安畅 云联网CloudLink
官方简介：云联网（CloudLink）基于SDN和高质量传输网络构建的云交换平台，实现多服务商（公有云、ISP、IDC）与用户间的快速互联互通，为企业提供安全、中立、开放的网络连接服务及灵活搭建IT基础架构的能力。
点评：安畅的CN2机房很有名了。。。第一次知道到安畅专线业务被机场使用还是很新鲜的
相关机场：
EXFLUX：全线内网线路
Bywave：全线内网线路
跑路云：BGP节点为内网线路
星梦数据：IEPL节点为内网线路
NyanCAT：被DDOS了大半年，关闭注册
东方网络：深港专线
Dler Cloud：日本GAMER为无锡日本专线，限速2M
Forwarded from Hacker News (yahnc_bot)
The big-load anti-pattern https://lemire.me/blog/2021/08/21/the-big-load-anti-pattern/
Daniel Lemire's blog
The big-load anti-pattern
When doing data engineering, it is common for engineers to want to first load all of the data in memory before processing the data. If you have sufficient memory and the loaded data is not ephemeral or you have small volumes, it is a sensible approach. After…
Forwarded from Hacker News (yahnc_bot)
How to Remember What You Read https://fs.blog/2021/08/remember-books/
Farnam Street
How to Remember What You Read
The benefits of reading are negated if you forget remember what you read. This article discusses a tested system to increase retention. Learn how to use active reading to remember more from books.
Forwarded from Hacker News (yahnc_bot)
Schema on write is better to live by https://hrishioa.github.io/schema-on-write-is-better-to-live-by/
Hrishi Olickel
Schema on write is better to live by
Thoughts on a decade of personal knowledge management
Forwarded from Hacker News (yahnc_bot)
We don't 'do' learning. It does us https://danielbmarkham.com/we-dont-do-learning-we-direct-it/
Nerd Ducks
We don't 'do' Learning. It does us.
Learning is not like seeing lions in a safari. More humble surfing. Less self-deluding chess.
Forwarded from Hacker News (yahnc_bot)
Let's Encrypt ACME DNS alias mode https://github.com/acmesh-official/acme.sh/wiki/DNS-alias-mode
GitHub
DNS alias mode
A pure Unix shell script implementing ACME client protocol - DNS alias mode · acmesh-official/acme.sh Wiki