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Saqib Ameen Subhan profile picture

Saqib Ameen Subhan

14 years running databases in production. MongoDB Community Creator 2024. Currently writing "Tales from Production" - real incidents, honest tradeoffs, no engagement bait.

Joined Joined on  github website
Large partitions don't fail loudly. They fail everywhere at once.
saqibameen86 profile

Large partitions don't fail loudly. They fail everywhere at once.

#cassandra #datamodeling #performance #database
Comments
3 min read
Repair at 1,000 nodes: why we stopped running nodetool repair by hand
saqibameen86 profile

Repair at 1,000 nodes: why we stopped running nodetool repair by hand

#cassandra #operations #distributed #database
Comments
3 min read
The heap dump usually exonerates Cassandra
saqibameen86 profile

The heap dump usually exonerates Cassandra

#cassandra #jvm #performance #debugging
Comments
3 min read
A compaction strategy is a bet about your workload
saqibameen86 profile

A compaction strategy is a bet about your workload

#cassandra #performance #database #operations
Comments
3 min read
mtools does not parse MongoDB 4.4+ JSON logs. So I built mdbkit.
saqibameen86 profile

mtools does not parse MongoDB 4.4+ JSON logs. So I built mdbkit.

#mongodb #opensource #database #cli
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Comments
6 min read
In Cassandra, a delete is a write (and reads pay for it)
saqibameen86 profile

In Cassandra, a delete is a write (and reads pay for it)

#cassandra #database #performance #distributed
Comments
3 min read
How to delete 2TB from a live MongoDB cluster without anyone noticing
saqibameen86 profile

How to delete 2TB from a live MongoDB cluster without anyone noticing

#mongodb #operations #performance #database
Comments
3 min read
I take down a healthy primary on purpose. You should too.
saqibameen86 profile

I take down a healthy primary on purpose. You should too.

#mongodb #highavailability #sre #database
Comments
3 min read
"The write was acknowledged" means less than you think
saqibameen86 profile

"The write was acknowledged" means less than you think

#mongodb #database #reliability #distributed
Comments
3 min read
cannot index parallel arrays, the MongoDB error that improves your schema
saqibameen86 profile

cannot index parallel arrays, the MongoDB error that improves your schema

#mongodb #indexing #datamodeling #database
Comments
2 min read
The explain plan I read before the CEO called back!
saqibameen86 profile

The explain plan I read before the CEO called back!

#mongodb #performance #indexing #database
Comments
3 min read
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