WithInstantRefresh refresh the affected shards to make insert operations visible to search instantly.

DedicatedTenantIndexPrefix is used to avoid index conflicts with system managed indices.

DefaultShardCountPerIndex provides shard count in an index.

DefaultSharedIndexName use single shared index for small tenants.

TenantIndexAliasPrefix is used to avoid index/alias conflicts, convention is same for dedicated and shared tenants.

DiscoveryRepository implements discovery.Repository with elasticsearch as the backing store.