feat(node): configure ntx script cache size via clap

bin/node/.env

@@ -14,3 +14,4 @@ MIDEN_NODE_VALIDATOR_INSECURE_SECRET_KEY=
 MIDEN_NODE_RPC_URL=http://0.0.0.0:57291
 MIDEN_NODE_DATA_DIRECTORY=./
 MIDEN_NODE_ENABLE_OTEL=true
+MIDEN_NTX_DATA_STORE_SCRIPT_CACHE_SIZE=

bin/node/src/commands/bundled.rs

@@ -322,6 +322,7 @@ impl BundledCommand {
                         ntx_builder.tx_prover_url,
                         ntx_builder.ticker_interval,
                         checkpoint,
+                        ntx_builder.script_cache_size,
                     )
                     .run()
                     .await

bin/node/src/commands/mod.rs

@@ -35,10 +35,12 @@ const ENV_GENESIS_CONFIG_FILE: &str = "MIDEN_GENESIS_CONFIG_FILE";
 const ENV_MAX_TXS_PER_BATCH: &str = "MIDEN_MAX_TXS_PER_BATCH";
 const ENV_MAX_BATCHES_PER_BLOCK: &str = "MIDEN_MAX_BATCHES_PER_BLOCK";
 const ENV_MEMPOOL_TX_CAPACITY: &str = "MIDEN_NODE_MEMPOOL_TX_CAPACITY";
+const ENV_NTX_SCRIPT_CACHE_SIZE: &str = "MIDEN_NTX_DATA_STORE_SCRIPT_CACHE_SIZE";
 const ENV_VALIDATOR_INSECURE_SECRET_KEY: &str = "MIDEN_NODE_VALIDATOR_INSECURE_SECRET_KEY";
 
 const DEFAULT_NTX_TICKER_INTERVAL: Duration = Duration::from_millis(200);
 const DEFAULT_TIMEOUT: Duration = Duration::from_secs(10);
+const DEFAULT_NTX_SCRIPT_CACHE_SIZE: NonZeroUsize = NonZeroUsize::new(1000).unwrap();
 
 // Formats a Duration into a human-readable string for display in clap help text.
 fn duration_to_human_readable_string(duration: Duration) -> String {
@@ -65,6 +67,14 @@ pub struct NtxBuilderConfig {
         value_name = "DURATION"
     )]
     pub ticker_interval: Duration,
+
+    #[arg(
+        long = "ntx-builder.script-cache-size",
+        env = ENV_NTX_SCRIPT_CACHE_SIZE,
+        value_name = "NUM",
+        default_value_t = DEFAULT_NTX_SCRIPT_CACHE_SIZE
+    )]
+    pub script_cache_size: NonZeroUsize,
 }
 
 /// Configuration for the Block Producer component

crates/ntx-builder/src/builder.rs

@@ -91,21 +91,16 @@ pub struct NetworkTransactionBuilder {
 }
 
 impl NetworkTransactionBuilder {
-    /// Default cache size for note scripts.
-    ///
-    /// Each cached script contains the deserialized `NoteScript` object, so the actual memory usage
-    /// depends on the complexity of the scripts being cached.
-    const DEFAULT_SCRIPT_CACHE_SIZE: NonZeroUsize = NonZeroUsize::new(1000).unwrap();
-
     /// Creates a new instance of the network transaction builder.
     pub fn new(
         store_url: Url,
         block_producer_url: Url,
         tx_prover_url: Option<Url>,
         ticker_interval: Duration,
         bp_checkpoint: Arc<Barrier>,
+        script_cache_size: NonZeroUsize,
     ) -> Self {
-        let script_cache = LruCache::new(Self::DEFAULT_SCRIPT_CACHE_SIZE);
+        let script_cache = LruCache::new(script_cache_size);
         let coordinator = Coordinator::new(MAX_IN_PROGRESS_TXS);
         Self {
             store_url,