In-memory vs. disk-based databases:Why do you need a larger than memory architecture?

Memgraph is an in-memory graph database that recently added support for working with data that cannot fit into memory. This allows users with smaller budgets to still load large graphs to Memgraph without paying for (more) expensive RAM. However, expanding the main-memory graph database to support disk storage is, by all means, a complex engineering endeavor. Let’s break this process down into pieces.