Google Search Appliance Feeds Protocol Developers Guide Uživatelský manuál stáhnout pdf (Strana 12)

Google Search Appliance: Feeds Protocol Developer’s Guide 12

Here is a record definition that includes base64 encoded content:

<content encoding="base64binary">Zm9vIGJhcgo</content>

</record>

Because base64 encoding increases the document size by one third, it is often more efficient to include

non-text documents as URLs in a web feed. Only contents that are embedded in the XML feed must be

encoded; this restriction does not apply to contents that are crawled.

Content Compression

Starting in Google Search Appliance version 6.2, content can be zlib compressed (see http://

en.wikipedia.org/wiki/Zlib), which improves performance, because less data is sent across the network.

To send compressed content:

1. Zlib compress the content.

2. Base64 encode the content.

3. Add the content text to the

content

element in the feed’s

record

statement.

4. Specify the

encoding="base64compressed"

attribute to the

content

element, for example:

<record url=’http://feed.example.com/myfeed.html’ action=’add’

mimetype=’text/html’>

<content encoding="base64compressed">eDQwDYoOyVEYo01NUUPAJqkCgg=</content>

</record>

Adding Metadata Information to a Record

Metadata can be included in record definitions for different types of feeds. You can encode metadata

using base64, for more information, see “Metadata Base64 Encoding” on page 13.

The following table provides information about incremental web feeds and metadata-and-URL feeds.

The following table provides information about incremental and full content feeds.

Data Source Name Feed Type Push Behavior Allows Metadata? Allows Content?

web incremental

incremental no no

any

metadata-and-url

incremental yes no

Data Source Name Feed Type Push Behavior Allows Metadata? Allows Content?

any

incremental

incremental yes yes

any

full

full yes yes

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 44 45

Komentáře k této Příručce

Žádné komentáře

Google Search Appliance Feeds Protocol Developers Guide Uživatelský manuál Strana 12

Komentáře k této Příručce

Související produkty a manuály pro Software Google Search Appliance Feeds Protocol Developers Guide