...
- Stable & Reliable
- Fault tolerant
- Scalability
- Efficient
- Cost-effective
- Maintainable
...
Table Indices
No Format |
---|
+-------------+
+---------------+ | USER TABLEs |
+-------+ | META 1 ~ 2^17 | | ... |
| META0 +-----+ ... +-----+ |
+-------+ | | | |
+---------------+ | |
+-------------+
1 2 3
↑ ↑ ↑
| | |
+---+-------+--------+ |
| Client +------------------------------+
+-----------+
|
Block Diagram
No Format |
---|
- MDA : Mail Delivery Agent +-----------------------------+ +-----------+ | Mail Frontend Web servers | * Client layer * | Watcher | | (web UI, send an mails) | +-----+-----+ +------+---------------+------+ | | ↑ | SMTP read read sent mail | requests reply log +--------------------------------------------------------------------------------------+ | ↓ ↓ | ↓ | | +--------------------------+----------------------+ | | | Broker Servers (MDA & Spam Filtering, ..., etc) +←--+ * Broker layer * | +--------------------------+----------------------+ | | | ↑ ↑ | | | +--------------------+--------------------+---------------+----------+-----------------+ | | | | Reads user profile Read contents Update contents | | | ↓ | +-----+-------------------+-----+ +---------+----------------------+ | | Hbase:UserTable | | Hbase:MIMETable | | | (user profile, logs) | | (MIME data) | | * Storage layer * +-------------------------------+ +--------------------------------+ | ↑ ↑ | +-----------------------------+--------------------+----------------------+ | | Hadoop: MapReduce Jobs (e.g. Log Analysis, SPAM calculation, .., etc) |←--+ +-------------------------------------------------------------------------+ |
...
No Format |
---|
From: To: ==============================================================================================================~~ edwardyoon@apache.org From:edward@udanax.org <"Edward J. Yoon"> To:chanwit@gmail.com <"Chanwit"> edward@udanax.org From:hama-dev@incubator.apache.org <"hama-dev"> Subject: Content: Address-Book: ... ~~============================================================================================================== <"Hello, I'm ed"> <"This is a content"> Address-Book:doug@apache.org <"Doug Cutting"> ... Address-Book:channy@gmail.com <"Channy Yoon"> ... |
SPAM filtering
- Sender Reputation
- Social Graph
- Text Pattern