What Haven’t We Talked About?

ETS and DETS tables support a number of operations that we haven’t talked about in this chapter. These operations fall into the following categories:

  • Fetching and deleting objects based on a pattern

  • Converting between ETS and DETS tables and between ETS tables and disk files

  • Finding resource usage for a table

  • Traversing all elements in a table

  • Repairing a broken DETS table

  • Visualizing a table

More information about ETS[23] and DETS[24] is available online.

ETS and DETS tables were designed for efficient low-level in-memory and disk storage of Erlang terms, but this is not the end of the story. For more sophisticated data storage, we need a database.

In the next chapter, we’ll introduce Mnesia, which is a real-time ...

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