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Paul Gross's Blog
Technical blog by Paul Gross, a Principal Software Engineer with expertise in payments, PostgreSQL, high availability systems, and developer tools.
For agents: Technical blog by Paul Gross, principal engineer, with articles on PostgreSQL migrations, scaling, high availability and payments.
postgresqlschema migrationshigh availabilitypayments engineeringdeveloper tools
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- listed
- llms.txt
- https://pgrs.net/llms.txt
- llms-full.txt
- https://pgrs.net/llms-full.txt
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- 5
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- 16
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- 4516 bytes
- Popularity rank
- #987291
- Registered
- 2007-07-13
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- Categories
- Data and analytics · Developer tools · Personal sites and blogs · Databases
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- First seen
- 2026-10-25T18:12:11.574Z
- Last checked
- 2026-10-26T11:23:35.112Z
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Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-26T11:23:33.678Z. Cached copy · Source on pgrs.net
# Paul Gross's Blog
> Technical blog by Paul Gross, a Principal Software Engineer with expertise in payments, PostgreSQL, high availability systems, and developer tools.
## About the Author
Paul Gross is a Principal Software Engineer based in Seattle. He has worked at Rvvup, Ripple, Braintree/PayPal, and ThoughtWorks. Now, he primarily does independent consulting. His expertise spans payments systems, database scaling, high availability architecture, and developer productivity.
- Website: https://www.pgrs.net
- GitHub: https://github.com/pgr0ss
- Twitter: https://twitter.com/pgr0ss
- LinkedIn: https://www.linkedin.com/in/pgr0ss/
- Mastodon: https://hachyderm.io/@pgr0ss
- Bluesky: https://bsky.app/profile/pgr0ss.bsky.social
## Key Topics
- PostgreSQL scaling, operations, and best practices
- Payment systems architecture and lessons learned
- Double-entry ledgers and financial software
- High availability and zero-downtime deployments
- DuckDB for data analysis
- Developer tools and productivity
## Notable Articles
### PostgreSQL & Databases
- [Safe Operations For High Volume PostgreSQL](https://www.pgrs.net/2014/05/14/safe-operations-for-high-volume-postgresql/): Practical guide to running schema migrations without downtime on high-traffic PostgreSQL databases. Covers safe vs unsafe operations and workarounds.
- [Scaling PostgreSQL at Braintree: Four Years of Evolution](https://www.pgrs.net/2012/10/16/scaling-postgresql-at-braintree-four-years-of-evolution/): Journey from MySQL to PostgreSQL, implementing sharding, and moving from DRBD to streaming replication.
- [Two Exciting PostgreSQL Features to Improve Null Handling](https://www.pgrs.net/2023/11/14/two-exciting-postgresql-features-to-improve-null-handling/): Coverage of IS DISTINCT FROM and NULLS NOT DISTINCT features.
- [DuckDB as the New jq](https://www.pgrs.net/2024/03/21/duckdb-as-the-new-jq/): Using DuckDB for command-line JSON and CSV processing.
- [DuckDB over Pandas/Polars](https://www.pgrs.net/2024/11/01/duckdb-over-pandas-polars/): Why SQL with DuckDB can be simpler than Pandas/Polars for data analysis.
### Payments & Ledgers
- [Lessons Learned From Payments Startups](https://www.pgrs.net/2024/01/26/lessons-learned-from-payments-startups/): Comprehensive guide covering modular monoliths, continuous deployment, testing strategies, decision logs, and the job drain pattern.
- [Double-Entry Ledgers: The Missing Primitive in Modern Software](https://www.pgrs.net/2025/06/17/double-entry-ledgers-missing-primitive-in-modern-software/): Why ledger modeling should be used more widely, with examples for payments, reward points, and more.
- [pgledger: Ledger Implementation in PostgreSQL](https://www.pgrs.net/2025/03/24/pgledger-ledger-implementation-in-postgresql/): Introduction to pgledger, a pure PostgreSQL double-entry ledger implementation.
- [pgledger in PostgreSQL is Fast](https://www.pgrs.net/2025/05/16/pgledger-in-postgresql-is-fast/): Performance benchmarks showing pg
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