X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=README.md;h=338a020cef284359185f25ebc9969272cea235b7;hb=7c7d7742df4cf61722cd87e2001f8dd5013b7960;hp=aab487ef589a5d19fabc0afbb9c3f157ef663977;hpb=f8b82287f4c543bc5a1a97962a3a0c6706d166af;p=btree

diff --git a/README.md b/README.md
index aab487e..338a020 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 Btree-source-code
 =================
 
-A working project for High-concurrency B-tree source code in C
+A working project for High-concurrency B-tree source code in C.  You probably want to download threadskv6.c for the latest developement version.
 
-There are seven files in the btree source code:
+Here are files in the btree source code:
 
 btree2s.c       Single Threaded/MultiProcess version that removes keys all the way back to an original empty btree, placing removed nodes on a free list.  Operates under either memory mapping or file I/O.  Recommended btrees hosted on network file systems.
 
@@ -21,6 +21,16 @@ threads2j.c     Multi-Threaded/Multi-Process with latching implemented by a latc
 
 threadskv1.c	Multi-Threaded/Multi-Process based on threads2i.c that generalizes key/value storage in the btree pages. The page slots are reduced to 16 or 32 bits, and the value byte storage occurs along with the key storage.
 
+threadskv2.c	Multi-Threaded/Multi-Process based on threadskv1 that replaces the linear sorted key array with a red/black tree.
+
+threadskv3.c	Multi-Threaded/Multi-Process based on threadskv1 that introduces librarian filler slots in the linear key array to minimize data movement when a new key is inserted into the middle of the array.
+
+threadskv4b.c	Multi-Threaded/Multi-Process based on threadskv3 that manages duplicate keys added to the btree.
+
+threadskv5.c	Multi-Threaded/Multi-Process based on threadskv4b that supports bi-directional cursors through the btree. Also supports raw disk partitions for btrees.
+
+threadskv6.c	Multi-Threaded/Single-Process with traditional buffer pool manager using the swap device.  Based on threadskv5 and btree2u.
+
 Compilation is achieved on linux or Windows by:
 
 gcc -D STANDALONE threads2h.c -lpthread