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87 lines
3.0 KiB
Markdown
87 lines
3.0 KiB
Markdown
Apache James Mailbox project
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============================
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The James Mailbox project aims to provide an email (message) store. The main user of the Mailbox project is James Server
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project. The implementations can be used standalone and do not depend on James Server.
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The project defines the Mailbox API and has several implementations that you can use. More details bellow.
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Overview
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========
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Apache James Mailbox has the following project (Maven) structure:
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~~~
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|-- api -- Mailbox API
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|-- hbase -- Mailbox implementation over HBase
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|-- jcr -- Mailbox implementation over Java Content Repository (JCR)
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|-- jpa -- Database Mailbox implementation using Java Persistence API
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|-- lucene -- Email indexing module with Apache Lucene
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|-- maildir -- Email storage using Maildir format http://en.wikipedia.org/wiki/Maildir
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|-- memory -- In memory Mailbox implementation - good for testing
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|-- spring -- Spring module - starts a specific mailbox implementation
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|-- store -- Common base/utility classes used in all mailbox implementations
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|-- tool -- Database migration/mailbox export tool
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|-- zoo-seq-provider -- Distributed unique ID generator using Zookeeper and Curator (Clustering James Mailbox)
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~~~
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Mailbox JPA
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===========
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Persist email messages inside any database that is supported by your Java Persistence Api provider. Currently James uses
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OpenJPA (http://openjpa.apache.org/), but it's easy to implement your own.
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Mailbox 'In memory' message store
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=================================
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In module **memory**, does not persist emails. It just keeps them in memory. Fast, and good for testing.
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**Note:** Not to be used in production.
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Mailbox JCR
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===========
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Uses Java Content Repository as a persistence layer. Uses Jackrabbit as a provider (http://jackrabbit.apache.org/),
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but you could swap in any provider. Comes with all the nice features that Jackrabbit has.
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Mailbox Maildir
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===============
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Implements the Maildir standard for email storage (http://en.wikipedia.org/wiki/Maildir). Works only on GNU/Linux and other
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*Nix systems.
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Mailbox HBase
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=============
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Uses Apache HBase (http://hbase.apache.org/) for storing email messages. Provides a scalable email storage. To have a fully
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distributed email server you will also need, among others:
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* distributed UID generation, look at Zookeeper Sequence Provider (**zoo-seq-provider**) for distributed locking and Mailbox manipulation
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* distributed SMTP/IMAP access
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* other
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Zookeeper Sequence Provider
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==========================
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Uses Zookeeper and Curator Framework for generating distributed unique ID's, needed for mailbox management from multiple
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instances of James (IMAP) servers.
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Building
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========
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The primary build tool for Apache James Mailbox is maven 3.
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On a new checkout start by running
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~~~
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$ mvn clean package
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~~~
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This will compiled all modules
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For just building without running junit tests:
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~~~
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$ mvn clean package -DskiTests=true
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~~~
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