Ideas

This is a place for dumping ideas and improvements.

Backend

In General

• replace guice-H2K-bridge with:
  • new jersey-guice adapter (by Squarespace)
• replace guice persistence module:
  • new guice JPA module (Onami-Persist)
• eclipselink (done) + connection pooling/provider? - e.g.
  • c3P0
    • -> possible via c3p0 DataSource, see here, here and here
  • eclipselink has an own connection pool (which will be utilised per default (maybe the configuration can be improved))
• upgrade:
  • jersey (done; v2.17)
  • guice (??? - 4.x is "only" beta right (since months and the next stable release is far away)) (done; v4.01-dswarm)

knutwalker's Performance Analysis Conclusion (DD-976)

• remove reflection for Jackson: https://github.com/FasterXML/jackson-module-afterburner => DD-990
• replace common CSV parser with Jackson
• remove reflection based trace logging => DD-991
• beefier CPU
• investigate caching opportunities => DD-992
• use (more) handwritten JSON sers/desers (with performance in mind) => DD-993 (done for GDM (via Jackson Streaming API))
• investigate in (likely advanced) JPA, precisely discovering ways to have it run JOIN statements (maybe we hold it wrong) => DD-994
• use handwritten SQL/JQL queries => DD-994
• change database (radically, like using a NoSQL/Graph store with Kundera) => DD-995