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2.4.17

  • Renames SQL BEGIN and COMMIT statements from SQL#other to SQL#begin and SQL#commit, respectively.
  • Makes naming between transaction and database metrics consistent. Previously, database metrics lacking a provided ActiveRecord label were named SQL#other.

2.4.16

  • Fix synchronization bug in Store (#205, PR #210)

2.4.15

  • Fix bug that causes no data to be reported to Scout when DataDog is installed (#211)
  • Fix NoMethodError for LayerChildrenSet when log_level: debug in certain situations.

2.4.14

  • Fix database connection issue when installed in an app also using the Textacular gem

2.4.13

  • Incorporating total time consumed into transaction trace policy

2.4.12

  • Calculates DelayedJob queue latency correctly when jobs are scheduled to run in the future

2.4.11

  • Adds transaction + periodic reporting callback extension support
  • Use Module#prepend if available for ActiveRecord exec_query instrument

2.4.10

  • Improve ActiveRecord instrumentation across Rails 3.2+, and adding support for the newly released Rails 5.2

2.4.9

  • ScoutApm::Transaction#rename and #ignore API
  • Explicit custom instrumentation with ScoutApm::Tracer#instrument blocks, without needing to include a module
  • Quieter logging in normal startup cases
  • Upgraded testing infrastructure

2.4.8

  • Fix issue with detailed middleware instrumentation

2.4.7

  • Fix issue recording backtraces

2.4.6

  • Fix an edge case for Resque instrumentation

2.4.5

  • More robust installation of instruments at startup
  • Several (very) minor bug fixes

2.4.4

  • Prevent agent from starting when monitor=false
  • Fix double-counting of HTTP requests when multiple http libraries are present
  • Fix an issue with Resque instrumentation

2.4.3

  • Ensure a startup hook runs on forking webservers

2.4.2

  • Fix shutdown hook for Passenger

2.4.1

  • Fix logging on STDOUT only platforms (Heroku)

2.4.0

  • Rework agent startup sequence
  • Install all background job instrumentations if you're running more than one
  • Capture longer individual SQL statements
  • Capture multiple SQL statements if multiple are run during a single AR call.

2.3.5

  • More robust recovery from stale layaway files
  • Quiet logging when hitting unusual layaway file limits
  • Better naming for Sidekiq delayed method jobs
  • Webrick is only required if actually needed

2.3.4

  • Capture 300 characters of a url from net/http and httpclient instruments (up from 100).

2.3.3

  • Capture ActiveRecord calls that generate more complex queries
  • More aggressively determine names of complex queries (to determine "User/find", "Account/create" and similar)
  • Increases the maximum size of SQL queries that are sanitized to 16KB from 4 KB
  • Captures all SQL individual queries generated in a given AR call (previous only a single query was captured)

2.3.2

  • More robust startup sequence when using rails server vs. directly launching an app server
  • Avoid incompatibility with 3rd party gems that aggressively obtain database connections

2.3.1

  • Fix DevTrace bug

2.3.0

Note: ScoutApm Agent version 2.2.0 was the initial ScoutProf agent that was determined quickly to be a big enough change to warrant the move to 3.0. We are not reusing that version number to avoid confusion.

  • Deeper database query instrumentation. The agent now collects app-wide database usage on every call. This will allow you to better identify persistently slow queries, and capacity bottlenecks.
  • Optimize the approach used during recording each request to avoid unnecessary work, improving performance

2.1.32

  • Better naming when using Resque + ActiveJob
  • Better naming when using Sidekiq + DelayedExtension

2.1.31

  • Better detection of Resque queue names
  • Fix passing arguments through Active Record instrumentation. (Thanks to Nick Quaranto for providing the fix)
  • Stricter checks to prevent agent from starting in Rails console

2.1.30

  • Add Resque support.

2.1.29

  • Add scm_subdirectory option. Useful for when your app code does not live in your SCM root directory.

2.1.28

  • Changes to app server load data

2.1.27

  • Don't attempt to call current_layer.type on nil

2.1.26

2.1.25

  • Automatically instrument API and Metal controllers.

2.1.24

  • Capture additional layers of application backtrace frames. (From 3 -> 8)

2.1.23

  • Extend Mongoid instrumentation to 6.x

2.1.22

  • Add DevTrace support for newest 4.2.x and 5.x versions of Rails

2.1.21

  • Fix edge case, causing DevTrace to fail
  • Add debug tooling, allowing custom functions to be inserted into the agent at key points.

2.1.20

  • Add a detailed_middleware boolean configuration option to capture per-middleware data, as opposed to the default of aggregating all middleware together. This has a small amount of additional overhead, approximately 10-15ms per request.

2.1.19

  • Log all configuration settings at start when log level is debug
  • Tune DelayedJob class name detection

2.1.18

  • Max layaway file threshold limit

2.1.17

  • Additional logging around file system usage

2.1.16

  • Extract the name correctly for DelayedJob workers run via ActiveJob

2.1.15

  • Limit memory usage for very long running requests.

2.1.14

  • Add TrackedRequest#ignore_request! to entirely ignore and stop capturing a certain request. Use in your code by calling: ScoutApm::RequestManager.lookup.ignore_request!

2.1.13

  • Rework Delayed Job instrumentation to not interfere with other instruments.

2.1.12

  • Revert 2.1.11's Delayed Job change - caused issues in a handful of environments

2.1.11

  • Support alternate methods of launching Delayed Job

2.1.10

  • Fix issue getting a default Application Name when it wasn't explicitly set

2.1.9

  • Send raw histograms of response time, enabling more accurate 95th %iles
  • Raw histograms are used in Apdex calculations
  • Gzip payloads
  • Fix Mongoid (5.0) + Mongo (2.1) support
  • Initial Delayed Job support
  • Limit max metric size of a trace to 500.

2.1.8

  • Adds Git revision detection, which is reported on app load and associated with transaction traces

2.1.7

  • Fix allocations extension compilation on Ruby 1.8.7

2.1.6

  • Support older versions of Grape (0.10 onward)
  • Vendor rusage library
  • Fix double-exit that caused error messages when running under Passenger

2.1.5

  • Be less strict loading Rails environments that don't have a matching scout_apm.yml section. Previously we raised, now we log and continue to load with the ENV settings
  • Fix a memory leak in error recovery code
  • Fix a minor race condition in data coordination between processes.
    • There was a tiny sliver of a window where a lock wasn't held, and it caused an exception to be raised.

2.1.4

  • Enhance regular expression that determines if a backtrace line is "inside" the application
    • Avoids labeling vendor/ as part of the monitored app

2.1.3

  • Less noisy output on errors with Context
    • Not logging errors w/nil keys or values
    • Bumping log level down from WARN => INFO on errors
  • Fix error with complicated AR queries
    • Caused high log noise
  • Sidekiq instrumentation changes to handle a variety of edge cases

2.1.2

  • Applies Rails.application.config.filter_parameters settings to reported transaction trace uris
  • Fix incompatibility with ResqueWeb and middleware instrumentation

2.1.1

  • Fix an issue with AR instrumentation and complex queries
  • Fix use of configuration option data_file
  • Update unit tests

2.1.0

  • Added ignore key to configuration to entirely ignore an endpoint. No traces or metrics will be collected. Useful for health-check endpoints.
  • Better logging for DevTrace

2.0.0

  • Reporting object allocation & mem delta metrics and mem delta for requests and jobs.
  • Collecting additional fields for transactions:
    • hostname
    • seconds_since_startup (larger memory increases and other other odd behavior more common when close to startup)
  • Remove unused & old references to Stackprof
  • Fixing exception on load if no config file is provided
  • DevTrace BETA

1.6.8

  • Don't wait on a sleeping thread during shutdown

1.6.7

  • Mongoid bugfixes

1.6.6

  • Bugfix related to DB detection

1.6.5

  • Add Mongoid 5.x support
  • Fix autodetection of mysql databases

1.6.4

  • Add Grape instrumentation
  • Handle DATABASE_URL configurations better
  • Change default (undeteced) database to Postgres (was Mysql)

1.6.3

  • Handle nil ignore_traces when ignoring trace patterns

1.6.2

  • Use a more flexible approach to storing "Layaway Files" (the temporary data files the agent uses).

1.6.1

  • Remove old & unused references to Stackprof. Prevent interaction with intentional usage of Stackprof

1.6.0

  • Dynamic algorithm for selecting when to collect traces. Now, we will collect a more complete cross-section of your application's performance, dynamically tuned as your application runs.
  • Record and report 95th percentiles for each action
  • A variety of bug fixes

1.5.5

  • Handle backslash escaped quotes inside mysql strings.

1.5.4

  • Fix issue where error counts were being misreported
  • Politely ignore cases when request.remote_ip raises exceptions.

1.5.3

  • Fix another minor bug related to iso8601 timestamps

1.5.2

  • Force timestamps to be iso8601 format

1.5.1

  • Add ignore_traces config option to ignore SlowTransactions from certain URIs.

1.5.0

  • Background Job instrumentation for Sidekiq and Sidekiq-backed ActiveJob
  • Collecting backtraces on n+1 calls

1.4.6

  • Defend against a nil

1.4.5

  • Instrument Elasticsearch
  • Instrument InfluxDB

1.4.4

  • Instrument Mongoid
  • Instrument Redis

1.4.3

  • Add a to_s call to have HTTPClient work with URI objects. Thanks to Nicolai for providing the change!

1.4.2

  • Add HTTPClient instrumentation

1.4.1

  • Fix JSON encoding of special characters

1.4.0

  • Release JSON reporting

1.3.4

  • Fix backtracking issue with on of the SQL sanitization regexes

1.3.3

  • Handling nil scope in LayerSlowTransactionConverter

1.3.0

  • Lazy metric naming for ActiveRecord calls

1.2.13

  • SQL Sanitation-Related performance improvements:
    • Lazy sanitation of SQL queries: only running when needed (a slow transaction is recorded)
    • An SQL sanitation performance improvement (strip! vs. gsub!)
    • Removing the TRAILING_SPACES regex - not used across all db engines and adds a bit more overhead

1.2.12

  • Add uri_reporting option to report bare path (as opposed to fullpath). Default is 'fullpath'; set to 'path' to avoid exposing URL parameters.

1.2.11

  • Summarizing middleware instrumentation into a single metric for lower overhead.
  • If monitoring isn't enabled:
    • In ScoutApm::Middleware, don't start the agent
    • Don't start background worker

1.2.10

  • Improve exit handler. It wasn't being run during shutdown in some cases.

1.2.9

  • Uses ActiveRecord::Base.configurations to access database adapter across all versions of Rails 3.0+.

1.2.8

  • Enhance shutdown code to be sure we save current-minute metrics and minimize the amount of work necessary.

1.2.7

  • Clarifying that Rails3 instrumentation also supports Rails4

1.2.6

  • Fix a bug when determining the name of metrics for ActiveRecord queries

1.2.5

  • Instrument ActionController::Base instead of ::Metal. This allows us to track time spent in before and after filters, and requests that return early from before filters.
  • Avoid parsing backtraces for requests that don't end up as Slow Transactions

1.2.4.1

  • Reverting backtrace parser threshold back to 0.5 (same as < v1.2 agents)

1.2.4

  • Removing layaway file validation in main thread
  • Fixing :force so agent will start in tests
  • Rate-limiting slow transactions to 10 per-reporting period

1.2.3

  • Trimming metrics from slow requests if there are more than 10.

1.2.2

  • Collapse middleware recordings to minimize payload size
  • Limit slow transactions recorded in full detail each minute to prevent overloading payload.

1.2.1

  • Fix a small issue where the middleware that attempts to start the agent could mistakenly detect that the agent was running when in fact it wasn't.

1.2.0

  • Middleware tracing - Track time in the Rack middleware that Rails sets up
  • Queue Time tracking - Track how much time is spent in the load balancer
  • Solidify support for threaded app servers (such as Puma or Thin)
  • Major refactor of internals to allow more flexibility for future features
  • Several bug fixes

1.0.0

  • General Availability
  • More robust Application Server detection

0.9.7

  • Added Cloud Foundry detection
  • Added hostname config option
  • Reporting PaaS in app server load (Heroku or Cloud Foundry).
  • Fallback to a middleware to launch the agent if we can't detect the application server for any reason
  • Added agent version to checkin data

0.9.6

  • Fix more 1.8.7 syntax errors

0.9.5

  • Fix 1.8.7 syntax error

0.9.4

  • Detect database connection correctly on Rails 3.0.x
  • Detect and warn if the old ScoutRails plugin is installed, since it causes an conflict.

0.9.3

  • Parse SQL correctly when using PostGIS
  • Quiet overly aggressive logging during startup. You can still turn up logging by setting the SCOUT_LOG_LEVEL environment variable to 'DEBUG'
  • Various minor bug fixes and clarification of log messages

0.9.2

  • Internal changes and bug fixes.

0.9.1.1

  • Minor change in Stackprof processing code. Any exception that happens there should never propagate out to the application

0.9.1

Big set of features getting merged in for this release.

  • StackProf support! Get visibility into your Ruby code. On Ruby 2.1+, just add gem 'stackprof' to your Gemfile.
  • Deploy tracking! Compare your application's response time, throughput and error rate between different releases. At the bottom of your Capistrano deploy.rb file, add require 'scout_apm' and we do the rest.
  • Log message overhaul. Removed a lot of the noise, clarified messages.

0.9.0

  • Come out of alpha, and release a beta version.

0.1.16

  • Initial support for Sinatra monitoring.

0.1.15

  • Add new application_root option to override the autodetected location of the application.

0.1.14

  • Add new data_file option to configuration, to control the location of the temporary data file. Still defaults to log/scout_apm.db. The file location must be readable and writeable by the owner of the Ruby process

0.1.13

  • Fix support for ActiveRecord and ActionController instruments on Rails 2.3

0.1.12

  • Fix Puma integration. Now detects both branches of preload_app! setting.
  • Enhance Cpu instrumentation

0.1.11

  • Post on-load application details in a background thread to prevent potential pauses during app boot

0.1.10

  • Prevent instrumentation in non-web contexts. Prevents agent running in rails console, sidekiq, and similar contexts.
  • Send active Gems with App Load message

0.1.9

  • Added environment (production, development, etc) to App Load message
  • Bugfix in Reporter class

0.1.8

  • Ping APM on Application Load
  • Fix compatibility with Ruby 1.8 and 1.9

0.1.7

  • Ability to ignore child calls in instrumentation.

0.1.6

  • Fix issues with Ruby 1.8.7 regexes

0.1.5

  • SQL sanitization now collapses IN (?,?,?) to a single (?)

0.1.4

  • Tweaks to Postgres query parsing
  • Fix for missing scout_apm.yml file causing rake commands to fail because of a missing log file.

0.1.3.1

  • Adds Puma support
  • Fix for returning true for unicorn? and rainbows? when they are included in the Gemfile but not actually serving the app.

0.1.3

  • Adds capacity calculation via "Instance/Capacity" metric.
  • Tweaks tracing to still count a transaction if it results in a 500 error and includes it in accumulated time.
  • Adds per-transaction error tracking (ex: Errors/Controller/widgets/index)

0.1.2

  • Adds Heroku support:
    • Detects Heroku via the 'DYNO' environment variable
    • Defaults logger to STDOUT
    • uses the dyno name vs. the hostname as the hostname
  • Environment vars with "SCOUT_" prefix override any settings specified in the config file.

0.1.1

  • Store the start time of slow requests.

0.1.0

  • Boom.