知鸦日报2022-08-02

Realtime processing technologies (A.K.A stream processing) is one of the key factors that enable Netflix to maintain its leading position in the competition of entertaining our users. Our previous generation of streaming pipeline solution Keystone has a proven track record of serving multiple of our key business needs. However, as we expand our offerings and try out new ideas, there’s a growing need to unlock other emerging use cases that were not yet covered by Keystone. After evaluating the options, the team has decided to create Data Mesh as our next generation data pipeline solution.

Last year we wrote a blog post about how Data Mesh helped our Studio team enable data movement use cases. A year has passed, Data Mesh has reached its first major milestone and its scope keeps increasing. As a growing number of use cases on board to it, we have a lot more to share. We will deliver a series of articles that cover different aspects of Data Mesh and what we have learned from our journey. This article gives an overview of the system. The following ones will dive deeper into different aspects of it.

最近几年，Google SRE在国内非常流行。Google SRE方法论中提出了SLO是SRE实践的核心，SLO为服务可靠性设定了一个目标级别，它是可靠性决策的关键因素。本文就来讲讲B站SRE在实践SLO时所走的弯路和总结的经验。

本文分享了团队在做单元测试中遇到的问题与解决思路。

本文将探讨一下，在多行文本情形下的一些有意思的文字动效。

Ever since the rather impressive Meltdown and Spectre attacks, browser vendors had to clamp down on shared memory and high resolution timers. While this conveniently means that the casual user doesn't have to work about phantom trolleys, it can be an irritating restriction for a developer. Some APIs got limited, while others were completely disabled unless one does a little dance to appease the web browser.

This means that certain web-applications have an additional hurdle to overcome.

A few examples of web-applications that have this problem are in-browser video converters using ffmpeg.wasm, a web-based notebook that supports Python and multithreaded Emscripten applications.

跟普通的文本传输相比，富媒体可以直观的让用户了解到消息内容，但是在传输过程中也面临着文件大、内存消耗大、传输过程漫长等问题。

临近开学，不少家长都开始辅导孩子的功课了，尤其是准备进入幼小衔接或者准备上小学的家长，不管是否选择鸡娃路线，都会遇到一些教学上的问题 —— 很多时候，孩子从学校学到的知识点，和我们记忆中的内容大相径庭，这不禁让人怀疑人生。

郡县制虽然自秦始皇时期开始全面推行，但却并非诞生于秦始皇时期，春秋时期的楚国在新吞并的诸侯国中试行县制，秦穆公则尝试在秦国内部推行郡制，这是县制和郡制的起源。

在秦始皇统一六国之后，对于该如何治理这个庞大的国家，曾出现过争论：以丞相王绾为首的派系主张继续推行分封制，而廷尉李斯却认为分封制是周王朝混乱的根源，主张全面推行郡县制，郡县制最终被秦始皇采纳并推行。

脱离大公司体系，他们重新认识自己的生存能力。