Revert "rayon test"

This reverts commit ce064d9.

Author: 0xnim

src/lib/world/src/db_functions.rs

@@ -130,24 +130,21 @@ pub(crate) async fn save_chunk_internal(world: &World, chunk: Chunk) -> Result<(
     Ok(())
 }
 
-use rayon::prelude::*;
-
 pub(crate) async fn save_chunk_internal_batch(
     world: &World,
     chunks: Vec<Chunk>,
 ) -> Result<(), WorldError> {
-    // Prepare the batch data for the upsert using rayon's parallel iterator
-    let batch_data: Vec<_> = chunks
-        .par_iter()  // parallel iterator over chunks
-        .map(|chunk| {
-            // Compress the chunk and encode it
-            let as_bytes = world.compressor.compress(&bitcode::encode(chunk))?;
-            // Create the key for the chunk
-            let digest = create_key(chunk.dimension.as_str(), chunk.x, chunk.z);
-            // Return the key-value pair
-            Ok((digest, as_bytes))
-        })
-        .collect::<Result<Vec<_>, WorldError>>()?;  // Collect into Result<Vec<_>>
+    // Prepare the batch data for the upsert
+    let mut batch_data = Vec::new();
+
+    for chunk in chunks.iter() {
+        // Compress the chunk and encode it
+        let as_bytes = world.compressor.compress(&bitcode::encode(chunk))?;
+        // Create the key for the chunk
+        let digest = create_key(chunk.dimension.as_str(), chunk.x, chunk.z);
+        // Collect the key-value pair into the batch data
+        batch_data.push((digest, as_bytes));
+    }
 
     // Perform the batch upsert
     world