CCCognos Connection RSReport Studio ASAnalysis Studio QSQuery Studio ESEvent Studio CSContent Store FWM Framework Manager

Cognos 8 Architecture Cognos 8 has a multitier architecture. For description purposes, it can be separated into three tiers: Web server, applications, and data. The tiers are based on business function, and are typically separated by network firewalls. Cognos 8 user interfaces sit above the tiers

Tiered Architecture Tier 1 Web Tier 2 Application Tier 3 Data Tier 1 Web Tier 2 Application Tier 3 Data Web Server Gateway Dispatcher Presentation Administration Notification Reporting Scheduling Logging Content Management Security

Cognos 8 Architecture Cognos 8 has a multitiered architecture. For description purposes, it can be separated into three tiers: Web server, applications, and data. The tiers are based on business function, and are typically separated by network firewalls. Cognos 8 user interfaces sit above the tiers

Cognos 8 Architecture

Tier 1: Web Web Server Gateway Web Server Gateway Intranet Extranet Tier

Web Server: Cognos 8 Gateways The Cognos 8 Web server tier contains one or more Cognos 8 gateways. Web communication in Cognos 8 is typically through gateways, which reside on one or more Web servers. A gateway is an extension of a Web server program that transfers information from the Web server to another server. When a Cognos 8 gateway receives a request, it encrypts passwords to ensure security extracts information needed to submit the request to a Cognos 8 server attaches environment variables for the Web server adds a default namespace to the request to ensure that the server authenticates the user in the correct namespace passes requests to a Cognos 8 dispatcher for processing

Tier 2: Application

Applications: Cognos 8 Servers The Cognos 8 applications tier contains one or more Cognos 8 servers. A Cognos 8 server runs requests, such as reports, analyses, and queries, that are forwarded by a gateway. Cognos 8 Servers includes Dispatcher Content Manager Dispatcher The dispatcher starts all Cognos 8 services configured and enabled on a computer, and routes requests. Content Manager Content Manager is the Cognos 8 service that manages the storage of customer application data, including security, configuration data, models, metrics, report specifications, and report output. Content Manager is needed to publish models, retrieve or store report specifications, manage scheduling information, and manage the Cognos namespace

Tier 2: Dispatcher Java Servlet running on Tomcat (OOTB)  Load balancing and request delivery  Main entry point for inbound requests from web server gateway Load balancing  Redirect requests to other dispatchers Request delivery  Determines which service performs the request

Tier 2: Dispatcher - Request

Tier 2: Dispatcher - Load Balance

Tier 2: Administration Scheduling and Notification

Tier 2: Report

Tier 2: Logging

Tier 3: Data

Tier 3: Security

User Interfaces Web-based interfaces Windows-based interfaces Cognos Connection Framework Manager Query Studio Transformer Report Studio Metric Designer Analysis Studio Event Studio Metric Studio