code: @Override
      public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
          String command = (String) msg;
          if (command.startsWith("get ")) {
              String keyString = command.substring("get ".length());
              ByteBuf key = Unpooled.wrappedBuffer(keyString.getBytes(CharsetUtil.UTF_8));
  
              BinaryMemcacheRequest req = new DefaultBinaryMemcacheRequest(key);
              req.setOpcode(BinaryMemcacheOpcodes.GET);
  
              ctx.write(req, promise);
          } else if (command.startsWith("set ")) {
              String[] parts = command.split(" ", 3);
              if (parts.length < 3) {
                  throw new IllegalArgumentException("Malformed Command: " + command);
              }
              String keyString = parts[1];
              String value = parts[2];
  
              ByteBuf key = Unpooled.wrappedBuffer(keyString.getBytes(CharsetUtil.UTF_8));
              ByteBuf content = Unpooled.wrappedBuffer(value.getBytes(CharsetUtil.UTF_8));
              ByteBuf extras = ctx.alloc().buffer(8);
              extras.writeZero(8);
  
              BinaryMemcacheRequest req = new DefaultFullBinaryMemcacheRequest(key, extras, content);
              req.setOpcode(BinaryMemcacheOpcodes.SET);
  
              ctx.write(req, promise);
          } else {
              throw new IllegalStateException("Unknown Message: " + msg);
          }
      }
docs: Transforms basic string requests to binary memcache requests