ArangoDB version 3.11.4 released

[vadim]

We are happy to announce the release of ArangoDB version 3.11.4!

This patch version is ready for production deployment and is a recommended upgrade for all 3.11 users.

Apart from some basic cleanup and code improvements related to found issues, the following notable things have been added to the 3.11.4 version of ArangoDB:

• FE-323: allow 'nested' property in view JSON UI.
• Improve logging in case hot backup locks cannot be taken on coordinators.
• Speed up incremental hotbackup upload by parallelization of remote-to-remote copies.
• Added the following metrics to improve observability of the in-memory cache subsystem: `rocksdb_cache_free_memory_tasks_total`, `rocksdb_cache_migrate_tasks_total`, `rocksdb_cache_free_memory_tasks_duration_total`, `rocksdb_cache_migrate_tasks_duration_total`.
• Improve performance of the in-memory cache's memory reclamation procedure.
• Expose the "high water multiplier" for the in-memory cache subsystem.
• Added the following metrics for the in-memory edge cache: `rocksdb_cache_edge_inserts_total`, `rocksdb_cache_edge_compressed_inserts_total`.
• Added the startup option `--cache.max-spare-memory-usage` to control usage for spare, unused hash tables in the in-memory caching subsystem.
• Updated ArangoDB Starter to 0.17.1.
• Upgraded Swagger-UI to v5.4.1.

Full changelog can be found here: https://github.com/arangodb/arangodb/blob/v3.11.4/CHANGELOG.
 
Version 3.11.4 distributives can be obtained at https://www.arangodb.com/download/ and https://download.arangodb.com/arangodb311/.