Michael Christofides

Michael Christofides

Founder of pgMustard

Appears in 80 Episodes

Why isn't Postgres using my index?

Why isn't Postgres using my index?

Nikolay and Michael discuss a common question — why Postgres isn't using an index, and what you can do about it! Here are some links to things they mentioned:Why isn’t...

Overhead of pg_stat_statements and pg_stat_kcache

Overhead of pg_stat_statements and pg_stat_kcache

Nikolay and Michael discuss the overhead of pg_stat_statements and pg_stat_kcache — mostly focusing on some interesting things Nikolay found while stress-testing some ...

Modern SQL

Modern SQL

Michael is joined by Markus Winand, creator of use-the-index-luke.com and modern-sql.com, and author of SQL Performance Explained, to discuss Modern SQL — what Markus ...

Bloat

Bloat

Michael is joined by Chelsea Dole, Staff Software Engineer and Tech Lead of the Data Storage Team at Brex, to discuss bloat. They cover what it is, why it's a problem,...

pgvector

pgvector

Michael is joined by Jonathan Katz, PostgreSQL Core Team member, Principle Product Manager at AWS, and also pgvector contributor, to discuss pgvector. They cover what ...

pgBadger

pgBadger

Michael is joined by Alicja Kucharczyk, Program Manager for Azure Database for PostgreSQL at Microsoft and organiser of the Warsaw PostgreSQL User Group, to discuss Al...

EXPLAIN

EXPLAIN

With Nikolay taking a well-earned break, Michael covers the basics of EXPLAIN — what it is, the parameters available, and a process he recommends for using it. Here ar...

Partitioning by ULID

Partitioning by ULID

Nikolay and Michael discuss partitioning by ULID — revisiting some of the old UUID vs bigint key debate in light of some new UUID specs, and how these can be used for ...

Hash indexes

Hash indexes

Nikolay and Michael discuss hash indexes in Postgres — what they are, some brief history, their pros and cons vs btrees, and whether or when they recommend using them....

Constraints

Constraints

Nikolay and Michael discuss PostgreSQL constraints — the six different types we have, how to add and modify them, including on large tables with high TPS.  Here are so...

Events

Events

Nikolay and Michael discuss PostgreSQL events — whether in-person or online, large conferences or small meet-ups, as well as some strong opinions based on their experi...

Subtransactions

Subtransactions

Nikolay and Michael discuss PostgreSQL subtransactions — what they are, and four issues they can cause at scale.  Here are some links to things they mentioned:Subtrans...

Companion databases

Companion databases

Nikolay and Michael discuss companion databases — when and why you might want to add another database management system to your stack (or not), and some specifics for ...

Blue-green deployments

Blue-green deployments

Nikolay and Michael discuss blue-green deployments — specifically an RDS blog post, how similar this is (or not) to what they understand to be blue-green deployments, ...

Data model trade-offs

Data model trade-offs

Nikolay and Michael discuss data model trade-offs — some cases where you might want to (gasp) de-normalize, and which PostgreSQL internals are at play.  Here are some ...

Under-indexing

Under-indexing

Nikolay and Michael discuss under-indexing — how to tell if this applies to you, some general and specific cases, as well as some tricky ones.  Here are some links to ...

Over-indexing

Over-indexing

Nikolay and Michael discuss over-indexing — what we mean by it, the regular issues people discuss about it, as well as a novel one Nikolay has come across and benchmar...

Query hints

Query hints

Nikolay and Michael discuss query hints — what they are, what we do and don't have in PostgreSQL, and some other things in and around the ecosystem to be aware of.  He...

Backups

Backups

Nikolay and Michael discuss Postgres backups — why we need them, what the options are, whether a dump is a backup or not, and some considerations for lowering RPO and ...

Postgres 16

Postgres 16

Nikolay and Michael discuss the release of PostgreSQL 16 — the most important new features, what they mean for us as users, whether and when to upgrade, and more. Here...

Logical replication

Logical replication

Nikolay and Michael discuss logical replication — some history, initialization, change data capture, how to scale it, some limitiations, and ways that it is getting be...

Our favourite v16 feature

Our favourite v16 feature

Nikolay and Michael discuss their favourite feature each from the upcoming PostgreSQL 16 release. Here are some links to some things they mentioned:v16 draft release n...

Connections

Connections

Nikolay and Michael discuss connections — the options, security and performance tradeoffs, and a few other things to be aware of. Here are some links to some things th...

Decoupled storage and compute

Decoupled storage and compute

Nikolay and Michael discuss a listener question — about products that take Postgres and transform it to something that decouples compute from storage (RDS Aurora, GC A...

Self-managing

Self-managing

Nikolay and Michael discuss self-managing Postgres — both the practicalities of doing so, as well as some managed-service style tooling.  Here are some links to some t...

Sharding

Sharding

Nikolay and Michael discuss sharding Postgres — what it means, why and when it's needed, and the available options right now.  Here are some links to some things they ...

Data types

Data types

Nikolay and Michael discuss data types in PostgreSQL — including system types, choosing between types, types provided by extensions, and more.  Here are some links to ...

High availability

High availability

Nikolay and Michael discuss HA (high availability) — what it means, tools and techniques for maximising it, while going through some of the more common causes of downt...

Beginner tips

Beginner tips

Nikolay and Michael discuss 10 beginner tips Nikolay recently shared — they go into a bit more detail on each, and even disagree a little on one or two!  Here are some...

Connection poolers

Connection poolers

Nikolay and Michael discuss Postgres connection poolers — when and why we need them, the king that is PgBouncer, and the many new pretenders to the throne. Here are li...

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