clockworklabs / clockworklabs/SpacetimeDB

Make `--data-dir` and `--in-memory` mutually exclusive

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#3,734 1 comment 0 reactions 0 assignees View on GitHub

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Dominant language
Rust
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Description

Right now you can't actually run spacetimedb-standalone in memory even though we have an --in-memory flag.

We need to fix the --in-memory flag to not ever access disk, and we also need to then make the --data-dir and --in-memory flags mutually exclusive.

This should be done by creating the appropriate interface for accessing the "storage" layer and ensure that all access goes through that interface.

NOTE: This is likely a prerequisite for Deterministic Simulation Testing of the whole process.

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Research direction

Start by tracing the spacetimedb-standalone entry points for --data-dir and --in-memory, then identify every storage access that can reach disk. Define the storage interface and verify that in-memory mode never accesses disk and that the two flags cannot be used together.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
backend, databases
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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