InfinityDB

InfinityDB uses a rugged internal storage update protocol for persistence on demand or cache spilling to disk for large amounts of data that maintains system-wide data integrity, and survives abrupt application termination, file system bugs, and kernel panics. The single data file remains up-to-date, safe, correct, and usable through any event. There is no log-based recovery, hence restart and recovery is immediate in all cases. InfinityDB is designed to use one single file. The combination of this feature and the instant recovery help make this product administrator free. No logs need to be archived or re-applied. There are no configuration files, temporary files, or text logs. No junk files are left behind after any kind of termination, so there is never any cleanup. InfinityDB provides a rich data representation space for structured, semi-structured, or unstructured data. The simple basic data model is used by the application to define and represent any mixture of trees, graphs, key/value maps, documents, text indexes, huge sparse arrays, tables with an unlimited number of columns of an unlimited number of values per row and column, nested multi-maps, inverted Entity-Attribute-Value triples, or creative custom structures. Use InfinityDB as an In-Memory-Only DBMS keeping all data in the cache, or let it grow smoothly to hundreds of GB with no code changes. Access to data in the memory cache is fully multi-core, while infrequently used data is paged to disk transparently. Data is operated on efficiently with fine granularity for small or large data structures regardless of memory capacity. Fine granularity accesses transition smoothly to coarse block-oriented granularity when and where needed.