Prex includes an administrative account that possesses an unlimited supply of both free and sold quota, intended for distribution to other users. This account is also responsible for clearing out outdated accounts, deposit records, old purchase requests, and other obsolete data.

It is technically possible (and advisable) to divide the responsibilities of the administrative account into multiple distinct roles to improve overall security in the future.

func (s *Server) InitDb(
	ctx context.Context,
) DbState {
	adminAccountId := s.initDbAdminAccount(ctx, s.config.AdminUsername)
	freeQuotaServiceUuid, _ := utils.Uuid2bytes("00000000-0000-0000-0000-000000000000")
	freeQuotaServiceId := s.initDbService(ctx, [16]byte(freeQuotaServiceUuid), "free quota service")
	soldQuotaServiceUuid, _ := utils.Uuid2bytes("00000000-0000-0000-0000-000000000001")
	soldQuotaServiceId := s.initDbService(ctx, [16]byte(soldQuotaServiceUuid), "sold quota service")
	s.initDbSoldServiceOrder(ctx, adminAccountId, freeQuotaServiceId)
	s.initAdminQuota(ctx, adminAccountId, soldQuotaServiceId)
	return DbState{
		AdminAccountId:     adminAccountId,
		FreeQuotaServiceId: freeQuotaServiceId,
		SoldQuotaServiceId: soldQuotaServiceId,
	}
}

Upon server initialization, three actions are performed:

1. If it doesn't already exist, an administrative account is created.
2. Free and sold quota services are established.
3. The administrative account is granted a significant amount of both types of quota.

You can verify which tokens are available to claim in the fufilled_orders database table.

Following initialization, external users can acquire quota tokens from the administrative account. The quantity, frequency, and price at which the administrator offers quota can be determined by factors such as the current system load and the estimated validity period of the tokens.

Free quota is directly placed in the active_orders table with an unlimited quantity. However, sold quota is stored in the fulfilled_orders table due to the following reasons:

• The administrative account itself must claim sold quota in order to utilize it, or it will also be denied access.
• Regular maintenance of the database and placement of sales orders are required.

For Prex to remain sustainable, routine cleaning of inactive accounts and transactions is necessary. The operator can schedule automated tasks using cron jobs with the administrator account's AUTH_TOKEN to perform these tasks. The following items require periodic cleaning:

The services table is managed manually.