Langali questions

• Manual Transactional Service and DAO layer for JPA with Spring
• BindException/Too many file open while using HttpClient under load
• Running a Scala Script with external dependencies
• Dependency Injection into your Singleton
• Update a list from another list
• Grails SEO friendly URLs
• Caching images in Memcached
• REST standard for GET on a resource that doesn't exist
• Measuring the Size of HttpSession object
• Spring Dependency Injection and Plugin Jar

Langali answers