# How we aggregate 70 billion prices to show price context to our users

DevFeed: [How we aggregate 70 billion prices to show price context to our users](<https://devfeed.tech/articles/how-we-aggregate-70-billion-prices-to-show-price-context-to-our-users-28052.md>)

Original publisher: [Read original article](<https://tech.trivago.com/post/2025-02-13-how-we-aggregate-70-billion-prices-to-show-price-context-to-our-users/>)

Author: Santiago Bohorquez Suarez Data Analyst

Published: 2025-02-13T00:00:00Z

Content type: article

Language: en

Sources: [Trivago](<https://devfeed.tech/sources/trivago.md>)

Topics: [data](<https://devfeed.tech/topics/data.md>), [Development](<https://devfeed.tech/topics/development.md>), [datasets](<https://devfeed.tech/topics/datasets.md>), [Kafka](<https://devfeed.tech/topics/kafka.md>), [real-time](<https://devfeed.tech/topics/real-time.md>)

Tags: [data](<https://devfeed.tech/tags/data.md>), [data-science](<https://devfeed.tech/tags/data-science.md>), [datasets](<https://devfeed.tech/tags/datasets.md>), [development](<https://devfeed.tech/tags/development.md>), [kafka](<https://devfeed.tech/tags/kafka.md>), [product-development](<https://devfeed.tech/tags/product-development.md>), [real-time](<https://devfeed.tech/tags/real-time.md>), [stream](<https://devfeed.tech/tags/stream.md>), [technical](<https://devfeed.tech/tags/technical.md>), [trends](<https://devfeed.tech/tags/trends.md>)

## AI overview

trivago describes how it aggregates historic advertiser price data to provide scalable, fast price context for destinations and accommodations. The article explains the limitations of real-time aggregation, the challenges caused by fragmented datasets and technical debt, and the design goals for its Price Stream data product.

## Source excerpt

Price comparison is one of the key value propositions of trivago, and in doing so, we handle billions of prices everyday to provide our users with the most accurate and up to date price as possi...