You only need one SearcherManager instance for every IndexWriter you have open (basically, one for your application). The SearcherManager class is thread-safe- that's the point- so all threads can retrieve their IndexSearchers from it without any additional synchronization in your code. So you can use it as a singleton if you'd like (although singletons in general are often a bad idea, for reasons that have nothing to do with Lucene).
On Fri, Jan 6, 2012 at 10:44 PM, chenhan <chenhan...@gmail.com> wrote: > hi, > i'm writing a normal web-search application with lucene 3.5.0. in version > 3.5.0 lucene provides SearcherManager to manage multithreaded searching. > but i don't know how to use this class. should i use it as singleton, or > should i initialize an instance for each searching? > > expect for your reply! thank you! > > -- > chenhan > Sent with Sparrow >
