improve readme

memcached/README.md

@@ -1,24 +1,32 @@
 ## Running the server
 
-`cargo run`
+```bash
+cargo run
+```
 
-In a new terminal, connect to the server via telnet:
+you can also set the cache size. ie: The max number of bytes the server can hold. The default is `1000 bytes` if the `CACHE_SIZE` flag is not provided.
 
+```bash
+CACHE_SIZE=2000 cargo run
 ```
+
+In a new terminal, connect to the server via telnet:
+
+```bash
 telnet localhost 11211
 ```
 
 Passing some commands:
 
 set a value
 
-```
+```bash
 set test 0 0 4
 1234
 ```
 
 get a value
 
-```
+```bash
 get test
 ```

memcached/src/db.rs

@@ -52,7 +52,7 @@ struct DbState {
     entries: MapWithByteSizeCount,
 }
 
-// We want to keep track of the byte size of the content so that we can remove the oldest content if the cache size exceeds the max_cache_size_in_bytes
+// We want to keep track of the byte size of the content so that we can remove the oldest content if the entire content byte count exceeds the max_cache_size_in_bytes
 // The LinkedHashMap maintains insertion order, so we can remove the oldest content first
 // the byte_count field provides a single lookup to get the total byte size of the content stored in the map
 #[derive(Default)]