知鸦日报2022-05-06

受数字化浪潮和疫情冲击的叠加影响，越来越多的企业开始面临数字化转型、业绩下滑等多重考验，在这样的背景下，订阅将为企业带来哪些商业创新机会？

《订阅经济》作者毛炜在本次读书会分享了订阅背后的核心逻辑，以及订阅适用性模型，如何跨越企业转型陷阱，实现数字化时代商业变革等问题。

只有把握每一个细节，才能保证最后的胜利。

各个业务系统数据库中的表都一股脑被放入数仓中，BI在取数做看板的时候，不免会读取全量的表，这其中有许多无用的数据IO会导致资源使用效率低，计算时间过长，导致我司的看板产出时间基本都维持在10点以后，有时候数据产生问题，甚至会延迟到下午2-3点。在没有数据支持的情况下，运营同学进行业务决策就如黑夜中走路一般，没有了方向，会造成一连串的不可估影响。

In order to build a high-quality knowledge base, it's important that we ensure each unique question exists on Quora only once. Writers shouldn't have to write the same answer to multiple versions of the same question, and readers should be able to find a single canonical page with the question they're looking for. For example, we'd consider questions like “What are the best ways to lose weight?”, “How can a person reduce weight?”, and “What are effective weight loss plans?” to be duplicate questions because they all have the same intent. To prevent duplicate questions from existing on Quora, we've developed machine learning and natural language processing systems to automatically identify when questions with the same intent have been asked multiple times.

We recently released a public dataset of duplicate questions that can be used to train duplicate question detection models like the one we use at Quora. In this post, we'll give you a sense of what's possible with our duplicate question dataset by outlining a few deep learning explorations we pursued in a recent hack week.

Swift 调试断点是与开发体验关系最为密切点之一，优酷 iOS 团队整理了解决方案并分享，希望能帮助到大家。

支付是交易达成的重要环节之一，京东到家产品中实现支付的途径是通过收银台系统完成的，收银台的重要性不言而喻。最近几个月，我们针对收银台项目中的存在的一些问题进行汇总，例如收银台支付方式的接入效率，项目维护成本高等问题，希望通过前端项目架构重新设计，来解决这些问题。

之前的 InternalThreadLocalMap 的类对象对象已经到了 128 字节，但是在 4.0.36 版本又新增了这个 arrayList 变量，但是没有相应的调整填充 rp* long 型字段的个数，导致新的 InternalThreadLocalMap 类变量大小达到了 136 字节。

大多时候我们可以通过tcpdump对网络抓包分析请求、响应数据来排查问题。但是如果程序是通过Unix Domain Socket方式来访问的那么tcpdump就看不到Unix Domain Socket里面具体流淌的内容了，本文希望找到一种方法达到如同抓包查看网卡内容一样来抓包查看Unix Domain Socket上具体的请求、响应数据。

Embedding-based retrieval is a core center piece of our recommendations engine at Pinterest. We support a myriad of use cases, from retrieval based on content similarity to learned retrieval. It’s powered by our in-house search engine — Manas — which provides Approximate Nearest Neighbor (ANN) search as a service, primarily using Hierarchical Navigable Small World graphs (HNSW).

While traditional token-based search retrieves documents on term matching on a tree of terms with logical connectives like ANDs and ORs, ANN search retrieves based on embedding similarity. Oftentimes we’d like to do a hybrid search query that combines the two. For example, “find similar products to this pair of shoes that are less than $100, rated 4 stars or more, and ship to the UK.” This is a common problem, and it’s not entirely unsolved, but the solutions each have their own caveats and trade-offs.

关于如何设计良好风格的 RESTful API，Github 有一份满分答案，熟读三遍，其义自现。本规范将在其基础之上使用尽可能简单的表述方式从以下几个常见部分作出详细约定。

同样都是拿10条数据，查第一页和第一百页的查询速度是一样的吗？为什么？

企业架构（Enterprise Architecture，以下简称EA）:是构建企业业务蓝图的路径、方法、原则及指导构建IT系统的方法与原则，包括业务架构及IT架构两大部分。

We can control the way Spark partitions our data and us it to parallelize computations on our dataset.

In the first two posts about the Duplo initiative, we described why we decided to revamp our mobile codebases, the initial phase to clean up tech debt, and our efforts to modularize our iOS and Android codebases (post 1, post 2). In this final post, we will discuss the last theme of the Duplo initiative, Modernization, and look at the overall results and impact on developers.

Delta leverages chain replication as an approach to coordinate clusters of fail-stop storage servers.

This article is the first in the series on ‘Building Myntra’s Video Platform’.

Read to find out how Grab is using the Docs-as-Code approach to improve technical documentation.

How we target CPUs to maximize speed across the software in our stack.

Nextdoor’s purpose is to cultivate a kinder world where everyone has a neighborhood they can rely on. We want to give neighbors ways to connect and be kind to each other, online and in real life. One of the biggest levers we have for cultivating more neighborly interactions is by building strategic nudges throughout the product to encourage kinder conversations.

Today, we use a number of mechanisms to encourage kindness on the platform, including pop-up reminders that slow neighbors down before responding negatively. Over the past few years, we’ve used machine learning models to identify uncivil and contentious content.

This blog focuses on Cinder's JIT compiler and its new function inliner and how it helps us speed up our production application on Instagram.

UUID(universally unique identifier) 长度是128 bit，也就是由32个16进制数值组成。其中 M 表示 version，N 表示 Variants xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx。例如：5aadc328-8d5e-11ec-8a00-acde48001122。

本文主要讲述DAS的历史背景、演进策略、重要功能及实现思路，希望能对从事相关开发的同学有所帮助或者启发。

ribbon是spring cloud netflix全家桶的一员，主要负责客户端的负载均衡。对于netflix全家桶，大家工作接触的比较多的是eureka, hystrix和feign，对于ribbon一般不是那么熟悉。本文的主要目的是通过分析源码，带大家深入了解Ribbon的工作原理，有助于工作上更好的运用Ribbon。

如何定时创建快照、定时删除时间比较久的历史快照呢？

AI可以做设计吗？本文将通过AI-Design的架构演进来揭晓。

本文以Web项目为例，从架构设计、辅助工具、编码技巧、测试提效等视角，给出一些可快速落地的实用小技巧，希望对大家有所帮助。

财经新闻怎么做？商业报道该如何入手？一家多元庞大的集团该怎样去认识、拆解？

一次好的人物采访不是简单地列采访提纲、采访主人公、结束采访这么简单......

从最近的“俄乌战争”“柬埔寨血奴事件”等热点新闻开始，两位记者首先分享了自己在信息核查方面的经验、技巧；更进一步地，通过自身的实践和观察，她们从不同阶段、多个角度讲述了处理与采访对象的关系时可能遇到的困境、矛盾与伦理思考。

写字的人需要跟现实中“死”的东西去争夺“活”的东西，去抢救和挖掘一个个新鲜的故事。

对深度思考1.0的迭代，对我们的工作产生实际的指导意义。

生涯最长一篇文章，讲清楚什么是“深度思考”。

99%的成功，都来源于基本功。