Many solutions depend heavily on functionality like search-based landing pages.

## Service reliability

You should count on the reliability specified in your service level agreement (SLA). Nevertheless, as search is a central part of a solution, you should implement a graceful degradation strategy if the Search & Navigation service should become unavailable.

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Note

If Optimizely is not hosting Search & Navigation, Optimizely cannot guarantee the connection between an application and the Search & Navigation service.

## Recommendations for coping with downtime

#### Leave the search-generated page sections blank

For example, a page displays a list of most watched products, which is fetched from Optimizely Search & Navigation. If Optimizely Search & Navigation is down, display a blank list.

**Advantage**

• Simple to implement.

**Disadvantage**

• Site does not display expected information.

#### Implement [query caching](🔗)

**Advantages**

• Relatively simple to implement.

• Site still works in many scenarios even if Optimizely Search & Navigation is down.

**Disadvantage**

• Development effort required.

#### Use [FindPagesWithCriteria](🔗) as back-up

**Advantage**

• Site works even if Optimizely Search & Navigation has issues.

**Disadvantages**

• Takes longer to implement.

• Site significantly slower.