UJUG Architecture Roundup

Derrick Isaacson, Director of Engineering

Architectural History

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Client State

HMACpublic static String calculateRFC2104HMAC(String

data, String key)

{

SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), “HmacSHA1”);

Mac mac = Mac.getInstance(“HmacSHA1”);

mac.init(signingKey);

byte[] rawHmac = mac.doFinal(data.getBytes());

return Encoding.EncodeBase64(rawHmac);

}

Stateless

Don’t DDOS Yourself

• Use RESTful principles for correct status codes (5xx vs 4xx) so clients know when to rety.• Use correct headers:• Retry-After: 120

Actors

Typed (JavaScript) Code Pays Off

• Static type checking• Unused value detection• Dead code removal• Syntax validation• Style warnings• JS pitfalls detection

Beware ORMs

Anorm

What does a framework really need?• Paremeterized queries• Simpler API than JDBC• Control over your queries

is Not an Object Relational Mapper

Beware of Coddling Frameworks

Q & A

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