If you are not using GCP or you want to have an open-source alternative, Please check my project Milvus vector database (https://milvus.io).
We've published a bunch of demo cases powered by vector database on GitHub. https://github.com/milvus-io/bootcamp
We have built Milvus vector database upon ANN libraries like faiss, annoy, nsmlib, etc.
We are aiming to create a cloud-scalable vector database. So Milvus comes to the crossroad of vector search and cloud database. There are many interesting system design topics in the development of Milvus 2.0. We will continue to share our experiences and thoughts on this topic.