Architecting Microservices Applications with Instant Analytics
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The document provides an overview of architecting microservices applications with Apache Kafka and Apache Druid for real-time analytics. It discusses Kafka's architecture, including producers, consumers, and stream processing, alongside the capabilities of Druid as a high-performance analytics database for event-driven data. Key use cases and benefits of both technologies are highlighted, emphasizing their importance in handling large-scale, real-time data processing challenges.
![public static void main(String args[]) {
Properties streamsConfiguration = getProperties(SCHEMA_REGISTRY_URL);
final Map<String, String> serdeConfig =
Collections.singletonMap(AbstractKafkaAvroSerDeConfig.SCHEMA_REGISTRY_URL_CONFIG,
SCHEMA_REGISTRY_URL);
final SpecificAvroSerde<Movie> movieSerde = getMovieAvroSerde(serdeConfig);
final SpecificAvroSerde<Rating> ratingSerde = getRatingAvroSerde(serdeConfig);
final SpecificAvroSerde<RatedMovie> ratedMovieSerde = new SpecificAvroSerde<>();
ratingSerde.configure(serdeConfig, false);
StreamsBuilder builder = new StreamsBuilder();
KTable<Long, Double> ratingAverage = getRatingAverageTable(builder);
getRatedMoviesTable(builder, ratingAverage, movieSerde);
Topology topology = builder.build();
KafkaStreams streams = new KafkaStreams(topology, streamsConfiguration);
Runtime.getRuntime().addShutdownHook(new Thread(streams::close));
streams.start();
}
private static SpecificAvroSerde<Rating> getRatingAvroSerde(Map<String, String> serdeConfig) {
final SpecificAvroSerde<Rating> ratingSerde = new SpecificAvroSerde<>();
ratingSerde.configure(serdeConfig, false);
return ratingSerde;
}
public static SpecificAvroSerde<Movie> getMovieAvroSerde(Map<String, String> serdeConfig) {](https://image.slidesharecdn.com/slides-architectingmicroservicesapplicationswithinstantanalytics-190619194657/85/Architecting-Microservices-Applications-with-Instant-Analytics-20-320.jpg)
![}
public static SpecificAvroSerde<Movie> getMovieAvroSerde(Map<String, String> serdeConfig) {
final SpecificAvroSerde<Movie> movieSerde = new SpecificAvroSerde<>();
movieSerde.configure(serdeConfig, false);
return movieSerde;
}
public static KTable<Long, String> getRatedMoviesTable(StreamsBuilder builder,
KTable<Long, Double> ratingAverage,
SpecificAvroSerde<Movie> movieSerde) {
builder.stream("raw-movies", Consumed.with(Serdes.Long(), Serdes.String()))
.mapValues(Parser::parseMovie)
.map((key, movie) -> new KeyValue<>(movie.getMovieId(), movie))
.to("movies", Produced.with(Serdes.Long(), movieSerde));
KTable<Long, Movie> movies = builder.table("movies",
Materialized
.<Long, Movie, KeyValueStore<Bytes, byte[]>>as(
"movies-store")
.withValueSerde(movieSerde)
.withKeySerde(Serdes.Long())
);
KTable<Long, String> ratedMovies = ratingAverage
.join(movies, (avg, movie) -> movie.getTitle() + "=" + avg);
ratedMovies.toStream().to("rated-movies", Produced.with(Serdes.Long(), Serdes.String()));
return ratedMovies;
}
public static KTable<Long, Double> getRatingAverageTable(StreamsBuilder builder) {
KStream<Long, String> rawRatings = builder.stream("raw-ratings",
Consumed.with(Serdes.Long(),
Serdes.String()));
KStream<Long, Rating> ratings = rawRatings.mapValues(Parser::parseRating)](https://image.slidesharecdn.com/slides-architectingmicroservicesapplicationswithinstantanalytics-190619194657/85/Architecting-Microservices-Applications-with-Instant-Analytics-21-320.jpg)
Architecting Microservices Applications with Instant Analytics
- 1. 1 Architecting Microservices Applications with Instant Analytics Tim Berglund, Sr. Director, Developer Experience, Confluent Rachel Pedreschi, Sr.l Director, Global Field Engineering, Imply Data
- 2. 2 What the heck is Apache Kafka and Why Should I Care?
- 3. K V
- 4. K V
- 5. K V
- 6. K V
- 7. K V
- 8. K V
- 9. … … … partition 0 partition 1 partition 2 Partitioned Topic producer
- 10. consumer A … … … partition 0 partition 1 partition 2 Partitioned Topic
- 11. consumer A consumer B … … … partition 0 partition 1 partition 2 Partitioned Topic
- 12. consumer A consumer B … … … partition 0 partition 1 partition 2 Partitioned Topic
- 13. consumer A consumer B … … … partition 0 partition 1 partition 2 Partitioned Topic consumer A
- 14. consumer A consumer B … … … partition 0 partition 1 partition 2 Partitioned Topic consumer A consumer A
- 17. consumer A consumer B … … … partition 0 partition 1 partition 2 Partitioned Topic consumer A consumer A
- 20. public static void main(String args[]) { Properties streamsConfiguration = getProperties(SCHEMA_REGISTRY_URL); final Map<String, String> serdeConfig = Collections.singletonMap(AbstractKafkaAvroSerDeConfig.SCHEMA_REGISTRY_URL_CONFIG, SCHEMA_REGISTRY_URL); final SpecificAvroSerde<Movie> movieSerde = getMovieAvroSerde(serdeConfig); final SpecificAvroSerde<Rating> ratingSerde = getRatingAvroSerde(serdeConfig); final SpecificAvroSerde<RatedMovie> ratedMovieSerde = new SpecificAvroSerde<>(); ratingSerde.configure(serdeConfig, false); StreamsBuilder builder = new StreamsBuilder(); KTable<Long, Double> ratingAverage = getRatingAverageTable(builder); getRatedMoviesTable(builder, ratingAverage, movieSerde); Topology topology = builder.build(); KafkaStreams streams = new KafkaStreams(topology, streamsConfiguration); Runtime.getRuntime().addShutdownHook(new Thread(streams::close)); streams.start(); } private static SpecificAvroSerde<Rating> getRatingAvroSerde(Map<String, String> serdeConfig) { final SpecificAvroSerde<Rating> ratingSerde = new SpecificAvroSerde<>(); ratingSerde.configure(serdeConfig, false); return ratingSerde; } public static SpecificAvroSerde<Movie> getMovieAvroSerde(Map<String, String> serdeConfig) {
- 21. } public static SpecificAvroSerde<Movie> getMovieAvroSerde(Map<String, String> serdeConfig) { final SpecificAvroSerde<Movie> movieSerde = new SpecificAvroSerde<>(); movieSerde.configure(serdeConfig, false); return movieSerde; } public static KTable<Long, String> getRatedMoviesTable(StreamsBuilder builder, KTable<Long, Double> ratingAverage, SpecificAvroSerde<Movie> movieSerde) { builder.stream("raw-movies", Consumed.with(Serdes.Long(), Serdes.String())) .mapValues(Parser::parseMovie) .map((key, movie) -> new KeyValue<>(movie.getMovieId(), movie)) .to("movies", Produced.with(Serdes.Long(), movieSerde)); KTable<Long, Movie> movies = builder.table("movies", Materialized .<Long, Movie, KeyValueStore<Bytes, byte[]>>as( "movies-store") .withValueSerde(movieSerde) .withKeySerde(Serdes.Long()) ); KTable<Long, String> ratedMovies = ratingAverage .join(movies, (avg, movie) -> movie.getTitle() + "=" + avg); ratedMovies.toStream().to("rated-movies", Produced.with(Serdes.Long(), Serdes.String())); return ratedMovies; } public static KTable<Long, Double> getRatingAverageTable(StreamsBuilder builder) { KStream<Long, String> rawRatings = builder.stream("raw-ratings", Consumed.with(Serdes.Long(), Serdes.String())); KStream<Long, Rating> ratings = rawRatings.mapValues(Parser::parseRating)
- 22. return ratedMovies; } public static KTable<Long, Double> getRatingAverageTable(StreamsBuilder builder) { KStream<Long, String> rawRatings = builder.stream("raw-ratings", Consumed.with(Serdes.Long(), Serdes.String())); KStream<Long, Rating> ratings = rawRatings.mapValues(Parser::parseRating) .map((key, rating) -> new KeyValue<>(rating.getMovieId(), rating)); KStream<Long, Double> numericRatings = ratings.mapValues(Rating::getRating); KGroupedStream<Long, Double> ratingsById = numericRatings.groupByKey(); KTable<Long, Long> ratingCounts = ratingsById.count(); KTable<Long, Double> ratingSums = ratingsById.reduce((v1, v2) -> v1 + v2); KTable<Long, Double> ratingAverage = ratingSums.join(ratingCounts, (sum, count) -> sum / count.doubleValue(), Materialized.as("average-ratings")); ratingAverage.toStream() /*.peek((key, value) -> { // debug only System.out.println("key = " + key + ", value = " + value); })*/ .to("average-ratings"); return ratingAverage; }
- 23. CREATE TABLE movie_ratings AS SELECT title, SUM(rating)/COUNT(rating) AS avg_rating, COUNT(rating) AS num_ratings FROM ratings LEFT OUTER JOIN movies ON ratings.movie_id = movies.movie_id GROUP BY title;
- 25. orders shipping users warehouse order web UI users web UI
- 26. orders shipping users warehouse order web UI users web UI druid product analytics
- 27. 27 What the heck is Apache Druid and Why Should I Care?
- 28. 28 TimRachel
- 29. 29
- 30. 30
- 31. 31
- 32. 32 Data Data Data Data Sources ETL Data Warehouse Some Code Usually an RDBMS Analytics Reporting Data mining Querying
- 33. 33
- 34. 34
- 35. 35 Data Data Data Map/reduce Reporting and Analytics ELT Data Warehouse ML/AI Engine Search system Data Lake HDFSRDBMS / NoSQL
- 36. 36
- 38. 38
- 39. 39
- 40. 40 Typical Big Data++ Challenges ● Scale: when data is large, we need a lot of servers ● Speed: aiming for sub-second response time ● Complexity: too much fine grain to precompute ● High dimensionality: 10s or 100s of dimensions ● Concurrency: many users and tenants ● Freshness: load from streams
- 41. 41 Search platform OLAP ! Real-time ingestion ! Flexible schema ! Full text search ! Batch ingestion ! Efficient storage ! Fast analytic queries Timeseries database ! Optimized storage for time-based datasets ! Time-based functions
- 42. 42 ! Batch ingestion ! Efficient storage ! Fast analytic queries Search platform OLAP ! Real-time ingestion ! Flexible schema ! Full text search Timeseries database ! Optimized storage for time-based datasets ! Time-based functions high performance analytics database for event-driven data
- 43. 43 Druid Use Cases in the Wild 1. Digital Advertising - Publishers, Advertisers, Exchanges 2. User Event Analytics- Clickstream, QoS, Usage 3. Network Telemetry 4. Lots and Lots of Data- IoT, Product Analytics, Fraud
- 44. 44 Gratuitous Customer Quote “The performance is great ... some of the tables that we have internally in Druid have billions and billions of events in them, and we’re scanning them in under a second.” Source: https://www.infoworld.com/article/2949168/hadoop/yahoo-struts- its-hadoop-stuff.html
- 45. orders shipping users warehouse order web UI users web UI druid product analytics
- 46. 46
- 47. 47 You can Druid too! Druid community site: https://druid.apache.org/ Imply distribution: https://imply.io/get-started Contribute: https://github.com/apache/druid
- 48. 48