EloqKV, a distributed database with Redis compatible API (GPLv2 and AGPLv3)

Re:EloqKV, a distributed database with Redis compatible API ... by hodr_super on Tuesday August 19, 2025 @04:56PM (#44956196)

I built a SaaS app with per-tenant caches. Initially I used Redis but ran into scale-up issues, so I tried DragonflyDB. It works well in general, but my Lua script use case isn’t supported by default.

The use case is straightforward: each tenant has cached objects like: `cache:{tenant_id}:{object_id} → cached JSON/doc`

I also maintain a tag index to find all object IDs with a given tag: `tag:{tenant_id}:{tag} → set of object_ids (tag example: “pricing”, “profile”)`

When a tag changes (say “pricing”), I use a single Lua script to look up all object IDs in the tag set and then delete their cache entries in one atomic operation.

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Re:EloqKV, a distributed database with Redis compatible API ... by hubertzhang on Tuesday August 19, 2025 @06:55PM (#44957005)

That use case aligns perfectly with EloqKV’s capabilities. In pure cache mode, batching multi-key deletions within Lua scripts can significantly reduce latency by minimizing client–server round trips.

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