Features:
Lexst Search Engine Application(Lexst SEA)
Scalability to index Billions of pages.
Each data node(a pentium 4 ordinary PC) stores 500,000 pages, Lexst SEA allow at most 20,000 nodes running in one cluster.
A Quick search engine
Lexst SEA use unique indexing algorithm, which is 10 times quicker than usual SQL based search engine.
No Single Point Failure
Each data node in Lexst SEA cluster can have one or more standby nodes, they take over the role automatically if any hardware of software failure occurs. A standby node is always trying to keep the data content identical to that in its primary node.
Automatical backup system
Standby node has dual function, which automatically backup the data at a time interval of a few seconds.
Automatical restore system
In one or a few seconds(you set it), standby node can upgrade automatically to a primary node, and the system restores by itself.Dynamical Expansion
New nodes can be introduced in at runing time. Cost Saving ,Furthermore, LEXST system is cost effective solution, it can run on ordinary PC, no need very professional hardwares. With very little human interference, it saves either labor cost .
Automatical partitioning
When your server hard disk is full or near to the limit, Lexst SEA can automatically partition the data.
Can crawl internet and intranet
You can switch Lexst SEA to a internet or intranet search engine at any time.
Multiple crawlers/spiders.
You can use quite many crawler/spiders to speed up the crawling of pages.
Multiple Threads Spider
You decide how many threads should be running in spider appliance.
Can crawl internet and intranet
You can switch Lexst SEA to a internet or intranet search engine at any time.
Boolean Search
search engine look up pages containing some word and not containing some other word? and the search engine support AND and OR logic among query words
Fuzzy Search
LexstSea support word- stemming.
Wild Card
Wild card character that can be used in search to match any one or more character or symbol.
Regular Expression
Searchers can use Regular expressions.