Redowan Delowar
@rednafi.com
Software Engineer @Doordash/Wolt
Writing rednafi.com
Recurring themes: Go, Python, distsys, schema-driven development, eventual consistency, resilience patterns, HA, data access strategies, observability, SRE practices, and sci-fis.
Writing rednafi.com
Recurring themes: Go, Python, distsys, schema-driven development, eventual consistency, resilience patterns, HA, data access strategies, observability, SRE practices, and sci-fis.
companies: add AI usage to candidate perf metrics
candidates: crank out shit PRs, BS tests, and RFCs
companies:
candidates: crank out shit PRs, BS tests, and RFCs
companies:
September 15, 2025 at 5:49 PM
companies: add AI usage to candidate perf metrics
candidates: crank out shit PRs, BS tests, and RFCs
companies:
candidates: crank out shit PRs, BS tests, and RFCs
companies:
New favourite code font: Google Sans Code
I generally don't like overly stylized fonts. Been using Jetbrains Mono since its inception. But I always felt like it's a bit too slim for my taste. But I also didn't want something as wide as Cascadia Code. This seems perfect.
github.com/googlefonts/...
I generally don't like overly stylized fonts. Been using Jetbrains Mono since its inception. But I always felt like it's a bit too slim for my taste. But I also didn't want something as wide as Cascadia Code. This seems perfect.
github.com/googlefonts/...
August 10, 2025 at 11:58 AM
New favourite code font: Google Sans Code
I generally don't like overly stylized fonts. Been using Jetbrains Mono since its inception. But I always felt like it's a bit too slim for my taste. But I also didn't want something as wide as Cascadia Code. This seems perfect.
github.com/googlefonts/...
I generally don't like overly stylized fonts. Been using Jetbrains Mono since its inception. But I always felt like it's a bit too slim for my taste. But I also didn't want something as wide as Cascadia Code. This seems perfect.
github.com/googlefonts/...
Traces, defined as DAGs of spans, and metrics, a collection of numbers that measure system behavior, are both somewhat vague as observability signal definitions. The clearest explanation I’ve found so far comes from a 2017 presentation by Cindy Sridharan.
July 23, 2025 at 10:56 PM
Traces, defined as DAGs of spans, and metrics, a collection of numbers that measure system behavior, are both somewhat vague as observability signal definitions. The clearest explanation I’ve found so far comes from a 2017 presentation by Cindy Sridharan.
May 25, 2025 at 11:26 PM
Vibe in the Go channel at my workplace. Node and Python (to a lesser extent) broke a bunch of people and they migrated over to Go.
April 4, 2025 at 2:39 PM
Vibe in the Go channel at my workplace. Node and Python (to a lesser extent) broke a bunch of people and they migrated over to Go.
Hyperscalable DBs like Cassandra/Scylla have some really limiting constraints.
For ex, in Cassandra, within the primary key section, customer_id & order_id form the partition key, and sku_id is the sorting key. These are immutable after table creation. Good luck if you ever need to.
For ex, in Cassandra, within the primary key section, customer_id & order_id form the partition key, and sku_id is the sorting key. These are immutable after table creation. Good luck if you ever need to.
April 4, 2025 at 11:15 AM
Hyperscalable DBs like Cassandra/Scylla have some really limiting constraints.
For ex, in Cassandra, within the primary key section, customer_id & order_id form the partition key, and sku_id is the sorting key. These are immutable after table creation. Good luck if you ever need to.
For ex, in Cassandra, within the primary key section, customer_id & order_id form the partition key, and sku_id is the sorting key. These are immutable after table creation. Good luck if you ever need to.
I’ll just leave it here 🤦♂️
March 27, 2025 at 12:08 PM
I’ll just leave it here 🤦♂️
This is so much nicer:
March 18, 2025 at 8:56 PM
This is so much nicer:
Hey man, all of your posts appear twice. You might already be aware of this. Automation gone wrong?
March 15, 2025 at 2:06 AM
Hey man, all of your posts appear twice. You might already be aware of this. Automation gone wrong?
How do you pronounce Ghostty?
1. Ghos-tty
2. Ghost-ty
3. Something else
Weird name but great terminal. This is the first terminal emulator that was able to move me from the default MacOS/Ubuntu terminal. Enjoying it a lot. My config is tiny:
1. Ghos-tty
2. Ghost-ty
3. Something else
Weird name but great terminal. This is the first terminal emulator that was able to move me from the default MacOS/Ubuntu terminal. Enjoying it a lot. My config is tiny:
January 9, 2025 at 10:04 AM
How do you pronounce Ghostty?
1. Ghos-tty
2. Ghost-ty
3. Something else
Weird name but great terminal. This is the first terminal emulator that was able to move me from the default MacOS/Ubuntu terminal. Enjoying it a lot. My config is tiny:
1. Ghos-tty
2. Ghost-ty
3. Something else
Weird name but great terminal. This is the first terminal emulator that was able to move me from the default MacOS/Ubuntu terminal. Enjoying it a lot. My config is tiny:
Had fun reading this, but I disagree with the unwarranted shade thrown at Redis.
rednafi.com/feed/2025/#d...
rednafi.com/feed/2025/#d...
January 1, 2025 at 8:51 PM
Had fun reading this, but I disagree with the unwarranted shade thrown at Redis.
rednafi.com/feed/2025/#d...
rednafi.com/feed/2025/#d...
Blogging is hard and takes time. But it gets easier once you pick up the pace. I took Simon Willison’s advice & pushed 39 pieces this year. Last year, it was 48 but I had a few longer ones this year that needed more time.
The trick is to lower your standards and pushing out good enough work.
The trick is to lower your standards and pushing out good enough work.
December 22, 2024 at 7:01 PM
Blogging is hard and takes time. But it gets easier once you pick up the pace. I took Simon Willison’s advice & pushed 39 pieces this year. Last year, it was 48 but I had a few longer ones this year that needed more time.
The trick is to lower your standards and pushing out good enough work.
The trick is to lower your standards and pushing out good enough work.
December 8, 2024 at 3:40 PM
Unless I’m missing something, it does allow decorating otter fixtures.
December 2, 2024 at 10:27 PM
Unless I’m missing something, it does allow decorating otter fixtures.
When I first saw Pydantic Logfire by pydantic.bsky.social, my first thought was: this is nice, but I'm already knee-deep in the Datadog eco, and o11y tools are a pain to swap. So why?
Oh this is why. Not only is the free tier great, but it also doesn’t prey on people forgetting to disable billing.
Oh this is why. Not only is the free tier great, but it also doesn’t prey on people forgetting to disable billing.
November 27, 2024 at 6:40 PM
When I first saw Pydantic Logfire by pydantic.bsky.social, my first thought was: this is nice, but I'm already knee-deep in the Datadog eco, and o11y tools are a pain to swap. So why?
Oh this is why. Not only is the free tier great, but it also doesn’t prey on people forgetting to disable billing.
Oh this is why. Not only is the free tier great, but it also doesn’t prey on people forgetting to disable billing.
Listening to professor Kernighan is always a delight. I've picked up two books from this:
- "The Signal and the Noise: Why So Many Predictions Fail—but Some Don't" by Nate Silver
- "Darwin's Ghosts: The Secret History of Evolution" by Rebecca Stott
rednafi.com/feed/2024/#b...
- "The Signal and the Noise: Why So Many Predictions Fail—but Some Don't" by Nate Silver
- "Darwin's Ghosts: The Secret History of Evolution" by Rebecca Stott
rednafi.com/feed/2024/#b...
November 11, 2024 at 10:56 PM
Listening to professor Kernighan is always a delight. I've picked up two books from this:
- "The Signal and the Noise: Why So Many Predictions Fail—but Some Don't" by Nate Silver
- "Darwin's Ghosts: The Secret History of Evolution" by Rebecca Stott
rednafi.com/feed/2024/#b...
- "The Signal and the Noise: Why So Many Predictions Fail—but Some Don't" by Nate Silver
- "Darwin's Ghosts: The Secret History of Evolution" by Rebecca Stott
rednafi.com/feed/2024/#b...