hash email addresses in database

The title uses massive data instead of big data ). It seems that big data is still a little virtual. I. Requirements Now we need to design a solution for filtering spam addresses online. Our database already has 1 billion valid email addresses

How to useCREATE TABLE ' user ' (' ID ' bigint) NOT NULL auto_increment, ' username ' varchar (a) NOT null COMMENT ' username ', ' password ' varchar (+) not NULL COMMENT ' password, encrypted storage ', ' phone ' varchar ' default NULL COMMENT '

The title uses massive data (massive datasets) rather than large data. Feel the big data or a little bit empty, to some practical. I. Demand Now we need to design a solution to filter the spam address online, we already have 1 billion legal email

As a free email server software, Sendmail has been widely used on servers of various Internet operating systems. Such as Solaris, HPUX, AIX, IRIX, and Linux. With the popularization of Internet connections, the chances of email servers being

So far, our main focus has been onPostfixThe role played at the end of the delivery path. That's it. That is, emails sent to the postfix server are mainly delivered to the local system. However, postfix also plays a role Another role-a repeater

 I. Problem Description Database Error. Read alertlog, which repeats the following content:   Wed Jul 25 17:47:18 2012 Errors in file/Oracle/admin/etldb/udump/etldb_ora_15674.trc: ORA-07445: exception encountered: core dump [kghssgdmp () + 273]

====================================== Related Software:1. Send email --- postfix 2. Identity Authentication --- sasl2 3. receive email --- dovecot 4. Anti-Virus email --- clamAV 5. Anti-Spam --- spamassassin 6. Control the virus and spam scanner --

Postfix Anti-Spam technology-Linux Enterprise Application-Linux server application information. The following is a detailed description. The Anti-Spam function of MTA is to filter sessions during MTA processing. This filter not only filters the Spam

1. Introduction to the bloom-Filter Algorithm Bloom filter (BF) is a space-efficient random data structure. It uses a bit array to easily represent a set and can determine whether an element belongs to the set. It is a fast probability algorithm

Bloom filter was proposed by bloom in 1970 and was initially widely used in spelling checks and database systems. In recent years, with the development of computer and Internet technologies, the continuous expansion of data sets has led to the