Improvements

• New instrumentation for Rediscala library #1389 (Thanks @aliyakamercan for the contribution)
• Extend Lettuce instrumentation support to 4.0-5.x sync/async APIs #1398
• Extend Ratpack instrumentation to 1.8 #1404
  • Applications using Ratpack 1.4.x and Guava 19 will no longer be instrumented. A minimum of Guava 20 is now required.

Changes

• Add exception sampling event for profiling #1297
• Resolve conflicts across new DD_VERSION, DD_ENV and DD_TAGS variables #1393

Bug Fixes

• Rework servlet 2 to not wrap HttpServletResponse objects #1387
• Handle AbstractMethodError in JDBC instrumentation if getClientInfo not implemented #1385
• Http Trace and Span ID should use StringCachingBigInteger #1397 (Thanks @aarya123 for the contribution)
• Check jax-rs AsyncResponse for span before starting new one #1403