在Netflix上介绍印象

Imagine scrolling through Netflix, where each movie poster or promotional banner competes for your attention. Every image you hover over isn’t just a visual placeholder; it’s a critical data point that fuels our sophisticated personalization engine. At Netflix, we call these images ‘impressions,’ and they play a pivotal role in transforming your interaction from simple browsing into an immersive binge-watching experience, all tailored to your unique tastes.

想象一下在 Netflix 上滚动浏览，每个电影海报或宣传横幅都在争夺你的注意力。你悬停的每个图像不仅仅是一个视觉占位符；它是一个关键的数据点，推动我们复杂的个性化引擎。在 Netflix，我们称这些图像为“印象”，它们在将你的互动从简单浏览转变为沉浸式的狂欢观看体验中发挥着关键作用，所有这些都根据你的独特品味量身定制。

Capturing these moments and turning them into a personalized journey is no simple feat. It requires a state-of-the-art system that can track and process these impressions while maintaining a detailed history of each profile’s exposure. This nuanced integration of data and technology empowers us to offer bespoke content recommendations.

捕捉这些时刻并将其转化为个性化的旅程并非易事。这需要一个先进的系统，能够跟踪和处理这些印象，同时保持每个个人资料曝光的详细历史。这种数据与技术的细致整合使我们能够提供定制的内容推荐。

In this multi-part blog series, we take you behind the scenes of our system that processes billions of impressions daily. We will explore the challenges we encounter and unveil how we are building a resilient solution that transforms these client-side impressions into a personalized content discovery experience for every Netflix viewer.

在这个多部分的博客系列中，我们带你深入了解我们每天处理数十亿印象的系统。我们将探讨我们遇到的挑战，并揭示我们如何构建一个弹性解决方案，将这些客户端印象转变为每个 Netflix 观众的个性化内容发现体验。

Impressions on homepage

主页上的印象

Why do we need impression history?

我们为什么需要印象历史？

To tailor recommendations more effectively, it’s crucial to track what content a user has already encountered. Having impression history helps us achieve this by allowing us to identify content that has been displayed on the homepage but not engaged with, helping us deliver fresh, engaging recommendations.

为了更有效地定制推荐，跟踪用户已经遇到的内容至关重要。拥有印象历史可以帮助我们实现这一目标，使我们能够识别在主页上展示但未被互动的内容，从而帮助我们提供新鲜且引人入胜的推荐。

Frequency Capping

频率限制

By maintaining a history...