MIS: Messages, Alerts, Notifications

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MIS Messages, Alerts, Notifications

• Pat Harris MIS Team

A portal is a web site or service that offers a
broad array of resources and services such as
e-mail, applications,, search engines, tools, and
on-line reference material.
TPTF 10/24/2006
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Overview

• Communication happens
• One source system to another
• Source systems to data stores
• Source systems to MIS
• Data Stores to MIS
• Source systems to Market Participant systems
• Market Participant Systems to ERCOT
• A message is ANY communication
• Alert, notification, email
• Sent from a Nodal Source system

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Definitions

• Message Everything is a message!
• Alert A message sent
• To MIS
• To Market Participant system
• Sometimes mirrored as an email
• Usually used in Electrical Emergency control
  procedures (EECP)
• ALWAYS requires a confirmation receipt
• Notification a message sent
• To MIS
• Mirrored as an email
• Sometimes posted as a document
• NO RECEIPT REQUIRED

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Definitions

• Are alerts and Notifications point-to-point, or
  publish/subscribe?
• Publish/subscribe. This means that messages are
  pushed through the queue, based on priority, and
  on to receiving systems who subscribe to the
  service.
• Why use a Messaging System?
• The Messaging system tracks whether the message
  was received and sends messages based on priority
  assigned
• How do we interface to the Messaging system?
• Data can be sent securely, transforming data as
  received according to standard descriptions.
• What if the Receiving system goes down?
• Messaging information persists in the Messaging
  queue until a successful acknowledgement is
  received. If none is received, the message is
  re-sent periodically until acknowledged.
• What if the Messaging system goes down?
• There are multiple messaging systems as part of
  the ERCOT Failover plan if the Messaging System
  on server A goes down, Server B automatically
  supplies a messaging system to fill the need.