readmes: regenerated

crates/brk_server/src/api/explorer.rs

@@ -1 +1,59 @@
+// use lru::LruCache;
+// use std::num::NonZeroUsize;
 
+// struct SmartBlkReader {
+//     // LRU cache of recently accessed files (memory mapped)
+//     mmap_cache: LruCache<String, memmap2::Mmap>,
+//     // Fallback to direct file I/O for cache misses
+//     max_cached_files: usize,
+// }
+
+// impl SmartBlkReader {
+//     fn new(max_cached: usize) -> Self {
+//         Self {
+//             mmap_cache: LruCache::new(NonZeroUsize::new(max_cached).unwrap()),
+//             max_cached_files: max_cached,
+//         }
+//     }
+
+//     fn get_transaction(
+//         &mut self,
+//         file_path: &str,
+//         offset: u64,
+//         length: usize,
+//     ) -> Result<Transaction, Box<dyn std::error::Error>> {
+//         // Try cache first
+//         if let Some(mmap) = self.mmap_cache.get(file_path) {
+//             let tx_data = &mmap[offset as usize..(offset as usize + length)];
+//             let mut cursor = std::io::Cursor::new(tx_data);
+//             return Ok(bitcoin::consensus::Decodable::consensus_decode(
+//                 &mut cursor,
+//             )?);
+//         }
+
+//         // Cache miss - use direct I/O and potentially cache the file
+//         let mut file = File::open(file_path)?;
+//         file.seek(SeekFrom::Start(offset))?;
+
+//         let mut buffer = vec![0u8; length];
+//         file.read_exact(&mut buffer)?;
+
+//         // Optionally add to cache (based on access patterns)
+//         if self.should_cache_file(file_path) {
+//             let file_for_mmap = File::open(file_path)?;
+//             if let Ok(mmap) = unsafe { memmap2::MmapOptions::new().map(&file_for_mmap) } {
+//                 self.mmap_cache.put(file_path.to_string(), mmap);
+//             }
+//         }
+
+//         let mut cursor = std::io::Cursor::new(&buffer);
+//         Ok(bitcoin::consensus::Decodable::consensus_decode(
+//             &mut cursor,
+//         )?)
+//     }
+
+//     fn should_cache_file(&self, _file_path: &str) -> bool {
+//         // Implement logic: recent files, frequently accessed files, etc.
+//         true
+//     }
+// }