Research Results and Fixes for My Minecraft Modpack

I analyzed Spark with 10 players online and drew the following conclusions.

EasyAuth Configuration

Added Vanish Mod (by DrexHD)

• Required for EasyAuth to work properly with vanish-until-auth=true.
• Also useful for player moderation.
• Works at the packet level and shouldn't cause issues (prevents players from noticing they're being watched).

SkinRestorer — Switched from Automatic to Manual Mode

The Problem

The mod was frequently sending requests to Mojang / Ely.by / MineSkin:

1. If the mod couldn't find a skin, the server received a "not found" response.
2. This generated errors with stack traces.
3. Stack traces clogged up logs, consumed memory, and pressured Java's garbage collector.
4. Results were cached for only 60 seconds.
5. After a minute, the mod repeated the same checks and spammed the logs all over again.

Consequences

• ⚠️ Increased RAM consumption
• ⚠️ Excessive log spam
• ⚠️ Potential player disconnections

The Fix

Now the mod no longer:

• ❌ Automatically checks skins on player login
• ❌ Makes unnecessary API requests
• ❌ Attempts to assign skins automatically

✅ If a player wants a skin, they must set it manually using the command:

/skin set