add scripts to produce the captcha images

captcha/Captcha.java

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+
+import java.io.File;
+import java.util.Random; 
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+
+class Captcha {
+
+    public static String getRandomString(int length) {
+
+        String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        Random random = new Random();
+        StringBuffer sb = new StringBuffer();
+
+        for (int i = 0; i < length; i++) {
+            int number = random.nextInt(base.length());
+            sb.append(base.charAt(number));
+        }
+
+        return sb.toString();
+    }
+
+    public static void main(String args[]) throws java.io.IOException {
+
+        ImageCaptchaGenerator gen = new ImageCaptchaGenerator();
+
+        for (int i = 0; i < 10000; i++) {
+            String word = getRandomString(7);
+            BufferedImage bi = gen.getImage(word);
+            String filename = word + ".jpg";
+            File out = new File(filename);
+            ImageIO.write(bi, "jpg", out); 
+        }
+    }
+}

captcha/get_img.rb

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+
+require 'memcached'
+
+$cache = Memcached.new("localhost:11211")
+
+i = 10000
+until i == 0 do
+    key = $cache.get(i.to_s, false)
+    value = $cache.get(key, false)
+    puts "#{i}, #{key}, #{value.length}"
+
+    i = i - 1;
+end
+

captcha/makeimg.sh

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+javac -cp .:combined.jar Captcha.java
+java -cp .:combined.jar Captcha

captcha/put_img.rb

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+
+require 'memcached'
+
+#pipelined, good for write
+$cache = Memcached.new("localhost:11211", :no_block => true, :buffer_requests => true, :noreply => true, :binary_protocol => false)
+
+i = 0
+Dir.glob("./img/*.jpg") do |f|
+    i = i + 1;
+    key = f.match(/([a-zA-Z]+)\.jpg/)[1]
+    value = File.read(f)
+    $cache.set(i.to_s, key, 0, false)
+    $cache.set(key, value, 0, false)
+end
+
+puts "Total records: #{i}"