Hystrix

Latency tolerance, fault tolerance and monitoring for distributed systems.
https://github.com/Netflix/Hystrix/wiki

JSON Web Token (JWT)

• JWT for JAX-RS
• JWT auth with Angular JS
• Token Authentication for Java Applications (video)

Other links:

• https://dzone.com/articles/json-web-token-in-action-with-jax-rs
• http://howtodoinjava.com/resteasy/jax-rs-resteasy-basic-authentication-and-authorization-tutorial/
• http://security.stackexchange.com/questions/51294/json-web-tokens-jwt-as-user-identification-and-authentication-tokens
• http://www.developerscrappad.com/1814/java/java-ee/rest-jax-rs/java-ee-7-jax-rs-2-0-simple-rest-api-authentication-authorization-with-custom-http-header/
• http://stackoverflow.com/questions/26777083/best-practice-for-rest-token-based-authentication-with-jax-rs-and-jersey
• http://stackoverflow.com/questions/33663193/implementing-generic-jax-rs-web-service-using-javax-ws-rs-core-application
• http://stackoverflow.com/questions/26777083/best-practice-for-rest-token-based-authentication-with-jax-rs-and-jersey
• http://codingjam.it/json-web-token-jaas-stateless-authentication-per-tomcat/
• https://developer.10duke.com/sdk/api/com/tenduke/sdk2/security/jaas/LoginModuleForJwtAuthentication.html
• http://stackoverflow.com/questions/29766673/custom-jax-rs-authorization-using-jwt-in-each-request

LMAX Disruptor - High performance parallel event processing in Java

Multicast.

Event pre-allocation.

https://github.com/LMAX-Exchange/disruptor

Typical Angular 2 errors

http://stackoverflow.com/questions/35856926/how-to-debug-angular2-in-chrome/35863878

Angular 2 style guides

• https://github.com/johnpapa/angular-styleguide/blob/master/a2/README.md
• https://github.com/mgechev/angular2-style-guide

TypeScript style guides

• Official MS TypeScript Handbook
• Official MS TypeScript Language Specification
• Official MS TypeScript Style Guide
• Another TypeScript Style Guide (Airbnb JS based)

OpenLayers 3

Review

Pros

• Map rotation.
• Large SRS support.
• Reprojection.
• Accurate (pixel-perfect) hit test.
• RTree-indexed features.
• Drawing optimizations (geometry simplification and clipping).
• Wider support of map sources including OGC protocols.
• Styling/symbolizers.
• API compatible WebGL renderer (lines not supported).
• No plugins required: built-in clustering, edition, heatmap and many other features.
• Async rendering with "Beforeoperations”, “postcompose” y “postrender” hooks.

Cons

• Large API.
• Still changing.
• Code size.

Resources

• Official examples
• Hot new features in OpenLayers 3
• Vector use cases
• Advanced styles
• Angular integration

Books

• The book of OpenLayers 3 (online)
• OpenLayers 3 Beginner’s Guide (code)
• Mastering OpenLayers 3

Minimal Angular 2 seed

SystemJS, TypeScript and NPM:
https://github.com/jhades/ng2-minimal

SystemJS, TypeScript, NPM and Gulp:
https://github.com/angular/angular2-seed/tree/systemjs

According to this article it should be a good starting point while angular-cli gets matured.

Java and GeoServer Vector Tiles in MapBox format (MVT)

Spec: https://github.com/mapbox/vector-tile-spec

Java Vector Tiles encoder

https://github.com/ElectronicChartCentre/java-vector-tile

GeoServer Vector Tiles Extension (gs-vectortiles)
https://github.com/geoserver/geoserver/tree/master/src/extension/vectortiles

http://suite.opengeo.org/docs/latest/dataadmin/vectortiles/index.html

GeoServer MVT Extension

https://github.com/stefan0722/gs-mvt

Uses DouglasPeuckerSimplifier.

Interfacing R

OpenCPU - HTTP API for R
https://www.opencpu.org/

• Stateless
• rApache, Nginx, Ubuntu

RApache
http://rapache.net/

RServe - Sockets 
https://rforge.net/Rserve/

R language from Java
https://github.com/jbytecode/rcaller
http://www.rforge.net/JRI/
http://www.renjin.org/
https://bitbucket.org/allr/fastr (http://www.oracle.com/technetwork/java/jvmls2013vitek-2013524.pdf)

Jcmd

https://dzone.com/articles/jcmd-one-jdk-command-line-tool-to-rule-them-all

QlikView extensions

Definition.xml

<ExtensionObject PageHeight="" PageWidth=""/>

• PageWidth: maximum number of columns to retrieve.
• PageHeight: maximum number of  rows to retrieve.

Data Object

• PageSize.x:  current page column count (maximum is PageWidth).
• PageSize.y: current page row count (maximum is PageHeight).
• TotalSize.x: total number of columns on the data set.
• TotalSize.y: total number of rows on the data set.

Selection
You can use the SearchColumn, SelectValuesInColumn or SelectTextsInColumn API methods.

this.Data.SelectTextsInColumn(0, true, value);

You can only make selections in the dimensions that are exposed to the extension.
The extension functions like any chart in QlikView meaning that it can only select in the underlying hypercube

References

• JavaScript API

Vert.x

• Asynchronous programming model.
• Multi-reactor (one ore more event loops).
• Polyglot: Java, JavaScript, Groovy, JRuby, Scala, ...
• Verticles: processing units. Akka/Actor similarities.
• Worker Verticles: blocking code.
• Modules: reusable Verticle set with isolated classloader.
• Local/clustered Shared Map.
• Local/clustered Event Bus.
• HA (auto-deploy of failed Verticles on other nodes).
• Hot deployment (auto-reload on development).
• Light with minimum dependencies: Netty, Jackson & Hazelcast.
• Deployment: fat JAR or minimal Vert.x container.
• Fast: https://www.techempower.com/benchmarks/#section=data-r12&hw=peak&test=json.

Common Crawl

http://commoncrawl.org/

Object to object mapper

• Dozer: the first one and most used. 
• ModelMapper: smart.
• Orika: generates bytecode.
• MapStruct: generates code. Favorite.
• Selma: like MapStruct. Simplest.

Benchmarks:

• http://javaetmoi.com/2015/09/benchmark-frameworks-javas-mapping-objet/
• http://blog.sokolenko.me/2013/05/dozer-vs-orika-vs-manual.html