From 3f2375dd85193bd74583d7b4e40c53f4df8862b7 Mon Sep 17 00:00:00 2001
From: bookug <zengli@bookug.cc>
Date: Thu, 18 May 2017 22:08:06 +0800
Subject: [PATCH] refactor: add comments

---
 KVstore/KVstore.cpp | 2 +-
 NOTES.md            | 2 ++
 Util/VList.h        | 3 +++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/KVstore/KVstore.cpp b/KVstore/KVstore.cpp
index d7f2479..e59e8e0 100644
--- a/KVstore/KVstore.cpp
+++ b/KVstore/KVstore.cpp
@@ -2462,7 +2462,7 @@ KVstore::binarySearch(unsigned _key, const unsigned* _list, unsigned _list_len,
 	long long _mid;
 	while (_left <= _right) {
 		_mid = (_right - _left) / 2 + _left;
-		cout<<"check "<<_step<<" "<<_mid<<" "<<_step*_mid<<" "<<_list_len<<endl;
+		//cout<<"check "<<_step<<" "<<_mid<<" "<<_step*_mid<<" "<<_list_len<<endl;
 		if (_key == _list[_step * _mid]) {
 			return _mid;
 		}
diff --git a/NOTES.md b/NOTES.md
index 29c62b6..ab8400e 100644
--- a/NOTES.md
+++ b/NOTES.md
@@ -619,6 +619,8 @@ http://www.hprd.org/download/
 
 
 ## GIT USAGE
+
+http://www.ruanyifeng.com/blog/2014/06/git_remote.html
 https://git-scm.com/book/zh/v1/%E8%B5%B7%E6%AD%A5-%E5%88%9D%E6%AC%A1%E8%BF%90%E8%A1%8C-Git-%E5%89%8D%E7%9A%84%E9%85%8D%E7%BD%AE
 
 #### how to commit a message
diff --git a/Util/VList.h b/Util/VList.h
index 541bdd8..a578197 100644
--- a/Util/VList.h
+++ b/Util/VList.h
@@ -35,6 +35,9 @@ class VList
 {
 public:
 	//NOTICE:the border is 10^6, but the block is larger, 1M
+	//this is not choosed intuitively, we make sure that using vlist is better: transferring time>random seek time(x/40M>0.006)
+	//Also notice that if no modification on data, read a node is almost sequentially in normal IVTree
+	//In VList, case is the same and using VList may bring another seek cost!(it is not easy to setup cache for IVTree due to data struct)
 	static const unsigned LENGTH_BORDER = 1000000;
 	//static const unsigned LENGTH_BORDER = 100;
 	static const unsigned BLOCK_SIZE = 1 << 20;	//fixed size of disk-block