use constant to refer to bytes offset

src/lib.rs

@@ -1,3 +1,22 @@
+// TODO: implement deletion
+// TODO: implement WAL rolling
+// TODO: use pointer swizzling for better buffer pool
+// TODO: add fast path for adding entry to a btree
+// TODO: batch commit logs together
+// TODO: remove txid in some wal entries
+// TODO: use binary search to search in nodes
+// TODO: just remove the btree lock altogether. There is no point using it if we only have one
+// write txn at a time.
+// TODO: use better eviction policy
+// TODO: check WAL entry's integrity when iterating
+// TODO: add fast path for the pager
+// TODO: reduce syscall for writing files. We can use vectorized syscall
+// TODO: improve checkpoint: don't exclusively lock a page if it's not dirty and need to be
+// flushed.
+// TODO: merge operations on the files to reduce the WAL size
+// TODO: remove byte copy during rearrangement
+// TODO: remove allocation during btree split
+// TODO: handle checkpoint error in the background thread
 // TODO: don't use anyhow for the error handling
 // TODO: setup CI