A system and method of indexing documents to support frequent field updates without reindexing may include receiving, from an indexing application, first fields from a document to be indexed. The method may also include receiving, from the indexing application, second fields from the document to be indexed. The first fields are to an index file associated with the indexing application. The index file comprises a directory wrapper around at least a portion of a file system for the indexing application, wherein the wrapper (i) provides indications of when the in-memory file is flushed to the file system, and (ii) controls synchronization of the file system and a data store. The method may further include writing the second fields to a reverse index.