This document discusses Achilles, an object mapper for Cassandra. It provides a live demo of Achilles' main API for insert, update, remove, and find operations. The document also outlines Achilles' documentation, slice and typed queries, native queries, options, and roadmap including asynchronous support and integration with Elasticsearch.

1. Achilles
object mapper for Cassandra
DuyHai DOAN, Technical Advocate, Achilles creator
@doanduyhai

2. Shameless self-promotion!
@doanduyhai
2
Duy Hai DOAN
Cassandra technical advocate
• talks, meetups, confs
• open-source devs (Achilles, …)
• Europe technical point of contact
☞ duy_hai.doan@datastax.com
• production troubleshooting

3. Agenda!
@doanduyhai
3
Why Achilles ?
Live Demo
Main API
Documentation
RoadMap

4. Why Achilles ?!
@doanduyhai
4
CQL looks like SQL
INSERT INTO users(login, name, age) VALUES(‘jdoe’, ‘John DOE’, 33);
UPDATE users SET age = 34 WHERE login = jdoe;
DELETE age FROM users WHERE login = jdoe;
SELECT age FROM users WHERE login = jdoe;

5. Why Achilles ?!
@doanduyhai
5
Do you want to do this ?
String query = ‘’SELECT * FROM users WHERE login = ‘jdoe’ ‘’;
List<Row> rows = session.execute(query).all();
for(Row row: rows) {
String name = row.getString(‘’name’’);
int age = row.getInt(‘’age’’);
…
}

6. Live code
DEMO !
https://github.com/doanduyhai/achilles-demo

7. Main API!
@doanduyhai
7
manager.insert(entity)
manager.update(entity)
manager.remove(entity)
manager.find(Entity.class, primaryKey)

8. Main API!
@doanduyhai
8
Slice query, typed query
RegularStatement select = select().from(“user_messages”)
.where(eq(“user_id”,bindMarker()))
.and(gte(asList(“message_folder”), bindMarker()))
.and(lt(asList(“message_folder”, “date”), bindMarker()))
.limit(10);
List<Message> messages = manager.typedQuery(Message.class, select,
userId, asList(“forums”), asList(“forums”, uuid1))
.get();

9. Main API!
@doanduyhai
9
Native query
RegularStatement nativeQuery = new SimpleStatement(“SELECT * FROM
Message WHERE … LIMIT 1”);
TypedMap firstMessage = manager.nativeQuery(nativeQuery).first();
String interlocutor = firstMessage.getTyped(“interlocutor”);
//Or
String interlocutor = firstMessage.<String>getTyped(“interlocutor”);

10. Main API!
@doanduyhai
10
Counter
Batch mode
Strategies (insert, naming)
Options

11. Documentation!
@doanduyhai
11
Comprehensive Github WIKI
Twitter-clone demo app (demo.achilles.io)
Versioned documentation (HTML & PDF)
JavaDoc

12. RoadMap!
@doanduyhai
12
Asynchronous API (branch Asynchronous)
• main API ( insert(), update(), …)
• slice, typed & native queries
C* 2.1 user defined types (UDT)
Reactive ? (RxJava)
ElasticSearch integration (@olivierbourgain)

13. Where to get Achilles ?!
@doanduyhai
13
www.achilles.io
Google ‘’Cassandra Achilles’’ ☞ first result

14. ! "
!
Q & R

15. Thank You
@doanduyhai
duy_hai.doan@datastax.com
www.achilles.io