Add PostgreSQL connection pooling comparison scripts and functionality - #75
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goh-chunlin
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Pull request overview
Adds a new Demo scenario and CLI command to simulate/compare PostgreSQL connection pooling modes on Azure burstable instances, plus helper scripts to run multi-mode and pool-size comparison runs and generate merged CSVs/graphs.
Changes:
- Introduces
azure-pgsql-poolingdemo command andAzurePgsqlPoolingScenariorunner. - Adds
PostgresQuery,PoolingMode, and a simpleConnectionPoolplus Azure DB service-time overhead modeling for pooling behaviors. - Adds Bash/PowerShell scripts to automate direct/session/transaction comparisons and pool-size sweeps.
Reviewed changes
Copilot reviewed 9 out of 9 changed files in this pull request and generated 11 comments.
Show a summary per file
| File | Description |
|---|---|
| SimNextgenApp.Demo/Scenarios/AzurePgsqlPoolingScenario.cs | New scenario wiring generator/model/engine to simulate pooling modes and export results/telemetry. |
| SimNextgenApp.Demo/Program.cs | Adds demo azure-pgsql-pooling command and options parsing. |
| SimNextgenApp.Demo/AzureDbSample/PostgresQuery.cs | Adds PostgresQuery load type and PoolingMode enum to carry pooling metadata. |
| SimNextgenApp.Demo/AzureDbSample/ConnectionPool.cs | Adds a simple connection pool abstraction used by the scenario. |
| SimNextgenApp.Demo/AzureDbSample/AzureDbBehavior.cs | Extends service-time computation to include connection/setup/reset overhead for PostgresQuery. |
| SimNextgenApp.Demo/AzureDbSample/pooling-comparison.sh | Script to run all modes, back up CSVs, and generate combined outputs/graphs. |
| SimNextgenApp.Demo/AzureDbSample/pooling-comparison.ps1 | PowerShell equivalent of pooling comparison runner and graph generator. |
| SimNextgenApp.Demo/AzureDbSample/pool-size-comparison.sh | Script to run session pooling across multiple pool sizes and generate summaries/graphs. |
| SimNextgenApp.Demo/AzureDbSample/pool-size-comparison.ps1 | PowerShell equivalent for pool-size sweep and visualization. |
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…and update throttling logic
…PostgreSQL queries
…to prevent connection acquisition failures
…or session pooling connections
…ostgreSQL pooling
…e in command options
…e in session pooling mode
…nd exit gracefully
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Copilot reviewed 10 out of 10 changed files in this pull request and generated 8 comments.
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…pool when exhausted
…for improved throttling accuracy
…ion and transaction pooling modes
… model for exhausted pool
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Copilot reviewed 13 out of 13 changed files in this pull request and generated 4 comments.
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…emantics and connection acquisition behavior
…ex to preserve all data points
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Copilot reviewed 13 out of 13 changed files in this pull request and generated 4 comments.
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… instead of average for improved accuracy
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Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.
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…e to 5% of minimum latency for consistency
…d as doubles for accurate maximum calculations
…del behavior in connection acquisition
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Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.
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…cy comparison charts and simplify output handling
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Copilot reviewed 16 out of 16 changed files in this pull request and generated 1 comment.
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…InstanceSpec instances
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Copilot reviewed 16 out of 16 changed files in this pull request and generated 3 comments.
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…ec to clarify performance characteristics
…al pool size determination
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Copilot reviewed 16 out of 16 changed files in this pull request and generated 3 comments.
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…ability in recommendations
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