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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
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Files
lib/phoenix_kit/migrations/postgres/v21.ex
defmodule PhoenixKit.Migrations.Postgres.V21 do
@moduledoc """
PhoenixKit V21 Migration: Optimize Message ID Search Performance
This migration adds a composite index on (message_id, aws_message_id) to
optimize the dual message ID search pattern used throughout the email system.
## Changes
### Email System Performance Optimization
- Adds composite index on (message_id, aws_message_id) for faster lookups
- Improves performance of AWS SES event correlation
- Optimizes message ID search queries used in SQSProcessor and EmailLog
## Background
The email system uses a dual message ID architecture:
- `message_id`: Internal PhoenixKit ID (pk_ prefix) - primary identifier
- `aws_message_id`: AWS SES ID - secondary identifier for AWS event correlation
This composite index enables fast searches when querying either field or both,
which is critical for processing AWS SES events and correlating them with
email logs.
## PostgreSQL Support
- Supports PostgreSQL prefix for schema isolation
- Uses efficient B-tree index for string matching
- Backward compatible with existing data
"""
use Ecto.Migration
@doc """
Run the V21 migration to add composite message ID index.
"""
def up(%{prefix: prefix} = _opts) do
# Add composite index on (message_id, aws_message_id) for optimized dual searches
# This index supports queries that search either message_id, aws_message_id, or both
create_if_not_exists index(:phoenix_kit_email_logs, [:message_id, :aws_message_id],
prefix: prefix,
name: "phoenix_kit_email_logs_message_ids_idx"
)
# Set version comment on phoenix_kit table for version tracking
execute "COMMENT ON TABLE #{prefix_table_name("phoenix_kit", prefix)} IS '21'"
end
@doc """
Rollback the V21 migration.
"""
def down(%{prefix: prefix} = _opts) do
# Remove composite index
drop_if_exists index(:phoenix_kit_email_logs, [:message_id, :aws_message_id],
prefix: prefix,
name: "phoenix_kit_email_logs_message_ids_idx"
)
# Update version comment on phoenix_kit table
execute "COMMENT ON TABLE #{prefix_table_name("phoenix_kit", prefix)} IS '20'"
end
# Helper function to build table name with prefix
defp prefix_table_name(table_name, nil), do: table_name
defp prefix_table_name(table_name, prefix), do: "#{prefix}.#{table_name}"
end