I have a setup with the following:
One (1) "main" site
Ten (10) "regional" sites
"main" site is a publisher to each of the regional sites (for 20 tables).
"main" site is also a subscriber from each of the 10 regional sites (5 tables).
In short: The main site has 1 publication and 10 subscriptions. Each regional site has 1 publication and 1 subscription. This is in addition to the streaming replication that each main and regional sites have for High Availability.
I currently have the following Postgres configuration for "main" site
max_wal_senders (25)
max_replication_slots (25)
max_logical_replication_workers (25)
max_worker_processes (25)
logical_decoding_work_mem (128MB)
max_slot_wal_keep_size 750MB
max_parallel_workers (8) default
max_parallel_maintenance_workers (2) default
max_parallel_workers_per_gather (2) default
max_sync_workers_per_subscription (2) default
I currently have the following Postgres configuration for "regional" site
max_wal_senders (10)
max_replication_slots (10)
max_logical_replication_workers (10)
max_worker_processes (10)
logical_decoding_work_mem (128MB)
max_slot_wal_keep_size 750MB
max_parallel_workers (8) default
max_parallel_maintenance_workers (2) default
max_parallel_workers_per_gather (2) default
max_sync_workers_per_subscription (2) default
Is this configuration sufficient and complete for a setup described above?
If I set higher number but do not use them (not all 10 regional sites defined) will it still consume resources?
I prefer to set higher numbers now so I will not need to restart Postgres when more "regional" setup are installed as long as it is not consuming to much resources if currently not used.
Thanks!
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