memcached_test.rb

require 'rubygems'
require 'sinatra'
require 'appengine-apis/memcache'

before do
  @memcache = AppEngine::Memcache.new
end

get '/test/:key' do
  @key = params[:key]
  val = @memcache[@key]
  now = Time.new.strftime("%H:%M")
  if val
    erb "hit! on #{now}<br>val: #{val}"
  else
    ttl = 60*3 #3minutes
    @memcache.set(@key, now, ttl)
    erb "miss! on #{now}<br>setting val: #{now}"
  end
end
get '/reset/:key' do
  @key = params[:key]
  if @key == "all"
    result = @memcache.flush_all
  else
    result = @memcache.delete(@key)
  end
  erb result.to_s
end
get '/stats' do
  stats = @memcache.stats
  erb "items: #{stats[:items]}<br>oldest_item_age: #{stats[:oldest_item_age]}"
end

__END__
@@layout
<%= yield %>
<p style="text-align:center;">
  <% if @key && @key != "all" %>
  <a href="/test/<%= @key %>">test <%= @key %> again</a><br>
  <a href="/reset/<%= @key %>">delete <%= @key %></a><br>
  <% end %>
  <a href="/reset/all">reset all keys</a><br>
  <a href="/stats">stats</a><br>
</p>