Edge Functions

Scheduling Edge Functions

The hosted Supabase Platform supports the pg_cron extension, a recurring job scheduler in Postgres.

In combination with the pg_net extension, this allows us to invoke Edge Functions periodically on a set schedule.

Examples

Invoke an Edge Function every minute

Store project_url and anon_key in Supabase Vault:

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select vault.create_secret('https://project-ref.supabase.co', 'project_url');
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select vault.create_secret('YOUR_SUPABASE_PUBLISHABLE_KEY', 'publishable_key');

Make a POST request to a Supabase Edge Function every minute:

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select
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  cron.schedule(
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    'invoke-function-every-minute',
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    '* * * * *', -- every minute
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    $$
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    select
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      net.http_post(
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          url:= (select decrypted_secret from vault.decrypted_secrets where name = 'project_url') || '/functions/v1/function-name',
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          headers:=jsonb_build_object(
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            'Content-type', 'application/json',
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            'Authorization', 'Bearer ' || (select decrypted_secret from vault.decrypted_secrets where name = 'anon_key')
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          ),
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          body:=concat('{"time": "', now(), '"}')::jsonb
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      ) as request_id;
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    $$
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  );

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