Administrator's Guide

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request classification rule -
Determines the processing
priority and access priority for
requests submitted to a web site.
During periods of heavy system
load, low priority requests may be
deferred or rejected. (This
depends on your specific policies.)
If a request is accepted, it is
placed on a processing queue,
based on its request class priority.
Based on your specified policies,
the request might be immediately
processed, or may “sit” in the
queue while other higher priority
requests are processed first.
S
service - Something of value that
a business is offering. A service is
made up of a collection of service
components (see service
components), such as web sites,
ftp sites, mail sites, customer
databases, pricing rules,
application logic modules, and so
on
service component - A
component that provides business
specific data or processing rules.
Examples include Internet service
sites (for example, web sites, ftp
sites), databases, business logic
modules, business specific rules
and scripts, and so on.
Service Control Agent (SCA) -
MonitorssitelevelSLOs,classifies
user requests, collects
performance information, and
performs corrective actions.
Resides on at least one system in
your WebQoS domain.
Service Control Interface
(SCI) - Receives configuration
informationfromthemanagement
console and API and monitors the
SCO and SCA(s). Resides on at
least one system in your WebQoS
domain.
Service Control Operator
(SCO) - Monitors service level
SLOs. Resides on only one system
in your WebQoS domain.
Service Level Agreement
(SLA) - A negotiated agreement
between service providers (or
information technology) and
businesses or business divisions.
SLAs contain one or more service
level objectives (SLOs) that
describeperformanceandcapacity
requirements for a given service
hosted by the service provider.
The SLA will often specify any
penaltiesassociatedwithviolation
of the objectives.
Service Level Objective (SLO)
- A performance (response time),
capacity, or availability objective
for a service. Typically, there are
several SLOs, each stating a very
specific objective, possibly tied to a
particular request classification
rule. Action policies state
corrective actions that may be
taken when a SLO is in jeopardy.