NUB is a set of high class C++ codes providing indexes for variable-length keys, compressed resource files, and an istream interface for blocks of memory. Now supports Unicode keys and up to 17 trillion gigabyte file sizes. See www.cnub.org/NUB.ashx
PyTablet is a self organizing DB for semi-structured data. PyTablet behave like a huge persistable dictionary where keys are ID and values are dictionary-like objects that can link each other and contain simple values.
Does for a database what CVS does for code. Checkout a local copy of the dbcurrent or back in time. Commit changes, pull updates, sync schema. Auto re-assigns & propagates conflicting keys. Atomic commits & row-level user rights + history tracking.
A unique flat-file database module, written in pure perl. True multi-level hash/array support, hybrid OO / tie() interface, cross-platform FTPable files, and quite fast. Can handle millions of keys/elements without significant slowdown.
Full-stack observability with actually useful AI | Grafana Cloud
Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.
Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
[RETIRED] Tornado/DB is an object-relational mapping engine for Java. Features
include object caching, multi-table inheritance, compound keys, relationships, XML config., JSP tags, small footprint.
Tiger is an object-oriented database, written in java. It uses the concept of primary keys, aggregates, relations and indexes for finding java objects in persistent storage. Tiger have support for transactions and remote access.
Java Object DBMS stores serialized java objects in a file with keys. The keys are automatically maintained. Heavy use of introspection minimizes programming burden. Future plans include transactions, network (RMI, SOAP) access.