| • Alex Koutmos discusses his work on Elixir projects, including Changelog app optimizations
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| • PromEx library for Prometheus metrics and Grafana dashboards is introduced
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| • Features of PromEx include automatic configuration, plugin support, and annotations for deploys
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| • Discussion on the challenges of manual Prometheus and Grafana setup and how PromEx addresses them
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| • Alex Koutmos shares his experience with Erlang 24's just-in-time compiler and its potential benefits for Elixir and Phoenix applications
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| • Elixir OTP 24 performance improvements (30-50% increase)
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| • PromEx and its integration with Prometheus metrics and Grafana Agent
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| • Observability pillars: metrics, logs, and traces, and their benefits and trade-offs
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| • Potential advantages of using events as a single observability data store
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| • Differences between metrics and logs
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| • Current limitations of monitoring tools (metrics/logs/traces)
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| • Potential for unified observability tool or approach
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| • Benefits of explicit tools for specific purposes vs. one unifying tool
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| • The role of exemplars in bridging the gap between metrics, traces, and logs
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| • Challenges of using logs as a source of metrics and performance data
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| • Log support in PromEx is limited to shipping mechanism
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| • PromEx uses Grafana Agent for exporting logs to Loki
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| • Discussion of events and how they are used in Elixir/Erlang ecosystem
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| • OpenTelemetry implementation for tracing in Elixir/Erlang
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| • Telemetry library for surfacing internal library events
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| • PromEx converts telemetry events into Prometheus metrics
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| • Users can create their own plugins and Grafana dashboards for specific needs
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| • Integration with Honeycomb for exposing raw events considered but not currently implemented
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| • Discussion of available plugins for PromEx, including Phoenix, Oban, Ecto, and Broadway
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| • Plans for updating Changelog.com to Erlang 24, with a live upgrade from Erlang 23
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| • Expected benefits of upgrading to Erlang 24, including reduced memory usage, improved serialization speed, and lower latency
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| • Discussion of metrics and monitoring for the upgrade, including Grafana Cloud probes
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| • Plans for documenting the upgrade process through blog posts and livestreams
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| • Plans for the weekend: gardening and DIY projects
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| • Balancing work (PromEx/Erlang) with personal interests/hobbies
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| • Discussion of DIY skills/experience
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| • Weather conditions affecting plans (barbecue)
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| • Importance of documenting work with photos/videos |
