The document discusses the functionalities and configurations of Apache Jackrabbit, a content repository for managing and storing large amounts of binary data efficiently through various datastores, including S3 and VFS options. It emphasizes benefits such as cheaper storage, faster backup and migration, and supports versioning with examples of repository configurations. Additionally, it highlights various community projects and utilities related to content management and templating support within the Bloomreach ecosystem.

1. Woonsan Ko
Nov. 15, 2018
(By courtesy of USFWS Mountain-Prairie, licensed by CC BY 2.0)

2. ● slideshare.net/woonsan
● woonsanko.blogspot.com

3. “What is Apache Jackrabbit?
Is it what I need to know?”

4. Disclaimer:
Not supported yet
by BRC.

5. ● (repository.xml)
<Repository>
<!-- SNIP -->
<Workspace name="${wsp.name}">
<FileSystem class="...">...</FileSystem>
<PersistenceManager class="...">...</PersistenceManager>
<SearchIndex class="...">...</SearchIndex>
<!-- SNIP -->
</Workspace>
<Versioning rootPath="${rep.home}/version">
<FileSystem class="...">...</FileSystem>
<PersistenceManager class="...">...</PersistenceManager>
<!-- SNIP -->
</Versioning>
<DataStore class="org.apache.jackrabbit.core.data.db.DbDataStore">...</DataStore>
<!-- SNIP -->
</Repository>

6. “Can’t we store huge amount of binary data in JCR?” *
* https://woonsanko.blogspot.com/2016/08/cant-we-store-huge-amount-of-binary.html

7. ● When using DbDataStore (the default option)
> 85% : binaries
(DATASTORE table)
* More at https://woonsanko.blogspot.com/2018/11/apache-jackrabbit-database-usage.html

8. Apache Jackrabbit DataStore supports:
● PersistenceManager
● DataStore
●
<< DbDataStore >> << VFS DataStores >>

9. AbstractDataStore
DbDataStore CachingDataStore
S3DataStoreVFSDataStore
LocalCache
E.g, ./datastore/

10. ● (repository.xml)
<Repository>
<!-- SNIP -->
<DataStore class="org.apache.jackrabbit.aws.ext.ds.S3DataStore">
<param name="config" value="${catalina.base}/conf/aws-s3-datastore.properties"/>
<param name="cacheSize" value="68719476736"/> <!-- 64MB -->
<param name="minRecordLength " value="1024"/>
<!-- SNIP -->
<param name="concurrentUploadsThreads" value="10"/>
<param name="asyncUploadLimit" value="100"/>
<param name="uploadRetries" value="3"/>
</DataStore>
<!-- SNIP -->
</Repository>
* Find example configs from https://github.com/woonsanko/hippo-davstore-demo/tree/master/conf/.

11. ● (repository.xml)
<Repository>
<!-- SNIP -->
<DataStore class="org.apache.jackrabbit.vfs.ext.ds.VFSDataStore">
<param name="config" value="${catalina.base}/conf/vfs2-datastore-sftp.properties" />
<param name="cacheSize" value="68719476736"/> <!-- 64MB -->
<param name="minRecordLength" value="1024"/>
<!-- SNIP -->
<param name="asyncWritePoolSize" value="10" />
</DataStore>
<!-- SNIP -->
</Repository>
* Find example configs from https://github.com/woonsanko/hippo-davstore-demo/tree/master/conf/.

12. ● Benefits:
○ Transparent
○ Almost unlimited storage for binaries
■ Amazon S3, SFTP Gateway for S3
■ SFTP file server, SFTP server with Google Cloud Platform backend
○ Cheaper storage
■ Amazon RDS vs. Amazon S3 buckets or SFTP
○ Faster backup, import, migration
■ Build new environment quickly from production data.
○ Save backup storage
■ Nightly DB backup files
○ Encryption at rest
■ Amazon S3 encryption, SFTP server with Linux file system encryption

13. “Can’t we keep unlimited amount of revision history?”
* https://woonsanko.blogspot.com/2018/11/externalizing-jcr-version-storage-with.html

14. ●
[1] https://www.onehippo.org/library/administration/maintenance/cleaning-up-version-history.html

15. > 55% : versions
(VERSION_BUNDLE table)
● When using BundleDbPersistenceManager (the default option)
> 25% : binaries
(DATASTORE table)
* More at https://woonsanko.blogspot.com/2018/11/apache-jackrabbit-database-usage.html

16. ● (repository.xml)
<Repository>
<!-- SNIP -->
<Versioning rootPath="${rep.home}/version">
<FileSystem class="org.apache.jackrabbit.vfs.ext.fs.VFSFileSystem">
<param name="config" value="${catalina.base}/conf/vfs2-filesystem-sftp.properties" />
</FileSystem>
<PersistenceManager
class="org.apache.jackrabbit.core.persistence.bundle.BundleFsPersistenceManager">
</PersistenceManager>
<!-- SNIP -->
</Versioning>
<!-- SNIP →
</Repository>
* Find example configs from https://github.com/woonsanko/hippo-davstore-demo/tree/master/conf/.

17. - The first project, FeedbackPlugin, started on 2008-01-11.
- boudekerk did the first SVN commit at 2008-01-15 14:20:15 CEST.
- arjecahn made the second commit on that day at 14:49 CEST.
- ...
- jeroenhoffman: “Moving to github is done!” at 2017-02-17 13:34:00 CEST.
- 32 active projects... welcoming your participation!
- ...

18. ● “Don’t stay up. Just schedule it.”
○ The Forge Utilities project supports scheduling Groovy Updater scripts.
○ Check out https://bloomreach-forge.github.io/hippo-utilities/
● “FreeMarker, Handlebars or Thymeleaf? No problem!”
○ The Tempating Support project allows to use any of those.
○ Check out https://bloomreach-forge.github.io/templating-support/
● “Content Packaging REST endpoints? Content-EXIM!”
○ It now supports built-in REST endpoints to export and import content in a flexible way.
○ Check out https://bloomreach-forge.github.io/content-export-import/builtin-rest-services.html
● “Web page flow control like Spring WebFlow in HST apps? Page-Flow!”
○ Page-Flow project supports easy page flow control development, seamlessly integrated with
Channel Manager and Relevance.
○ Checkout https://bloomreach-forge.github.io/page-flow/

19. ● “Can we update webfiles on server at runtime?” or
“Can we use JCR API through JCR over HTTP?”
○ Jackrabbit support SimpleWebDAVServlet and JcrRemotingServlet.
○ Check out https://bloomreach-forge.github.io/hippo-jcr-over-webdav/.
○ Use cadaver or cyberduck for WebDAV access.
○ JCR-Shell (https://bloomreach-forge.github.io/jcr-shell/), a CLI tool for JCR,
using JCR over WebDAV (JCR Remoting).

20. ● https://github.com/woonsanko/hippo-davstore-demo
○ Follow README.md to build and run it on your laptop.
● Scenarios
○ VFS DataStore with SFTP backend
○ VFS FileSystem for Versioning
○ More if time allows...

21. https://bloomreach-forge.github.io/
https://github.com/bloomreach-forge

22. ...
● jackrabbit.apache.org
● developers.bloomreach.com / www.onehippo.org
● bloomreach-forge.github.io/