Migrations for the MnemosynePostgres tables and indexes.

Usage

Create a migration in your application:

defmodule MyApp.Repo.Migrations.AddMnemosyne do
  use Ecto.Migration

  def up, do: MnemosynePostgres.Migrations.up(version: 1, embedding_dimensions: 1536)
  def down, do: MnemosynePostgres.Migrations.down(version: 1)
end

When a new version is released, generate a new migration:

defmodule MyApp.Repo.Migrations.UpgradeMnemosyneV2 do
  use Ecto.Migration

  def up, do: MnemosynePostgres.Migrations.up(version: 2, embedding_dimensions: 1536)
  def down, do: MnemosynePostgres.Migrations.down(version: 2)
end

Options

• :version - the target migration version (defaults to 1)
• :embedding_dimensions - (required for V1) the dimensionality of your embedding vectors
• :index_type - :hnsw (default) or :ivfflat
• :hnsw_m - max number of connections per layer for HNSW
• :hnsw_ef_construction - size of the dynamic candidate list for HNSW
• :ivfflat_lists - number of inverted lists for IVFFlat
• :prefix - table name prefix, defaults to "mnemosyne_"