Ask HN: What is the most important feature for you when choosing a vector db?

With the widespread adoption of LLM and the rapid growth of the AI app market, the conversation around vector databases has become particularly vibrant. So, for AI app developers, what feature do you consider the most important when you're in the process of selecting a vector database?

Here are some options provided, and of course, you are welcome to add more: * Fast vector search * Filter search * Scalability * Hybrid search * Cost effective * Security