Comparisons anchored on Orthanc, the GPL-3.0 lightweight DICOM server: against the dcm4chee archive, and SQLite against PostgreSQL storage for production.
A lightweight, plugin-based DICOM server against a full Java EE archive with LDAP configuration and IHE-oriented workflows: licenses, architecture, databases, security setup, scale evidence and which one fits a research group, imaging center or hospital.
When Orthanc's built-in SQLite index stops being enough: the instance counts the docs give, what the PostgreSQL plugin adds (shared database, multiple instances, high availability), the AGPL plugin license, and how to migrate.
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