This article details how Nubank built its own in-house logging platform to address issues of cost, scalability, and control over their logging infrastructure. Initially reliant on a vendor solution, they found costs rising unpredictably and experienced limitations in observability and data retention.
To solve this, Nubank divided the project into two major steps: **The Observability Stream** (ingestion and processing) and the **Query & Log Platform** (storage and querying).
* **Observability Stream:** Fluent Bit for data collection, a Data Buffer Service for micro-batching, and an in-house Filter & Process Service.
* **Query & Log Platform:** Trino as the query engine, AWS S3 for storage, and Parquet for data format.
The new platform currently ingests 1 trillion logs daily, stores 45 PB of searchable data with a 45-day retention, and handles almost 15,000 queries daily. Nubank reports the platform costs 50% less than comparable market solutions while providing them with greater control, scalability, and the ability to customize features. The project underscored Nubank's value of challenging the status quo and leveraging a combination of open-source and in-house development.
To solve this, Nubank divided the project into two major steps: **The Observability Stream** (ingestion and processing) and the **Query & Log Platform** (storage and querying).
* **Observability Stream:** Fluent Bit for data collection, a Data Buffer Service for micro-batching, and an in-house Filter & Process Service.
* **Query & Log Platform:** Trino as the query engine, AWS S3 for storage, and Parquet for data format.
The new platform currently ingests 1 trillion logs daily, stores 45 PB of searchable data with a 45-day retention, and handles almost 15,000 queries daily. Nubank reports the platform costs 50% less than comparable market solutions while providing them with greater control, scalability, and the ability to customize features. The project underscored Nubank's value of challenging the status quo and leveraging a combination of open-source and in-house development.
