Updated NEWS and README

NEWS

@@ -1,3 +1,23 @@
+1.6.8:
+- Wush Wu helped add a new performance option on redisConnect to bring the
+  rredis package closer to the performance of the hiredis C library. Use
+  the nodelay=TRUE option to disable the TCP Nagle algorithm, which can
+  dramatically improve performance especially for frequent short transactions,
+  at the expense of basically allowing Redis to take over your network
+  (diable TCP Nagle at your own risk, and only enable this option if you
+  really need to). We include this option because that's what hiredis does
+  by default (wow?!!), and we want to make this performance gain available.
+  This TCP trickery unfortunately introduces a little bit of C code.
+- Use the `redisCmd` function to easily issue *any* Redis command, even
+  if the R package does not yet have a wrapper function for it. Useul also
+  for prototyping. This has been available for a while but people don't
+  seem to know about it.
+- We've cut back and streamlined code when returning raw values and,
+  based on a good suggestion of sherbert, there is now a unified way to return
+  raw values across all functions that retrieve stored values from Redis.
+  Simply add the `raw=TRUE` argument to skip unserialization of the returned
+  result.
+
 1.6.7:
 - Nonblocking connections in R are problematic, we switched
   to blocking mode.

README

@@ -2,8 +2,8 @@ rredis: An R client for Redis
 
 NOTE
 
-1. Redis is evolving rapidly. The rredis client supports many commands that are
-only available in Redis versions 1.3 and higher.
+Redis is evolving rapidly. The rredis client supports many commands that are
+only available in Redis versions 2.* and higher.
 
 EXAMPLE
 
@@ -24,3 +24,9 @@ $y
 [1] "Cazart"
 
 > redisClose()
+
+
+PERFORMANCE
+
+Consider using the redisSetPipeline function to enable pipelining, and
+also read help about options available to the redisConnect function.