Alexander Reelsen
@spinscale.bsky.social
Husband, dad, enjoys working distributed, likes distributed databases & search engines, the JVM, Basketball/Streetball fan, gulps coffee, lives in Emsdetten/Germany, occasionally blogs at https://spinscale.de
vibe - Easy Linux virtual machine on MacOS to sandbox LLM agents
Only for ARM, written in Rust, uses a Debian Linux base image. Guess these kind of mechanism will keep popping up until they standardize as well. Let's see if the AI vendors come up with something.
Only for ARM, written in Rust, uses a Debian Linux base image. Guess these kind of mechanism will keep popping up until they standardize as well. Let's see if the AI vendors come up with something.
GitHub - lynaghk/vibe: Easy Linux virtual machine on MacOS to sandbox LLM agents.
Easy Linux virtual machine on MacOS to sandbox LLM agents. - lynaghk/vibe
github.com
February 16, 2026 at 1:56 PM
vibe - Easy Linux virtual machine on MacOS to sandbox LLM agents
Only for ARM, written in Rust, uses a Debian Linux base image. Guess these kind of mechanism will keep popping up until they standardize as well. Let's see if the AI vendors come up with something.
Only for ARM, written in Rust, uses a Debian Linux base image. Guess these kind of mechanism will keep popping up until they standardize as well. Let's see if the AI vendors come up with something.
ttl - Fast, modern traceroute with real-time TUI, a better mtr
Always interesting to see how a tool from almost 4 decades ago gets replaced due to modern requirements.
Always interesting to see how a tool from almost 4 decades ago gets replaced due to modern requirements.
GitHub - lance0/ttl: Fast, modern traceroute with real-time TUI, per-hop stats, ASN/geo lookup, ECMP detection, and MPLS label parsing. A better mtr.
Fast, modern traceroute with real-time TUI, per-hop stats, ASN/geo lookup, ECMP detection, and MPLS label parsing. A better mtr. - lance0/ttl
github.com
February 15, 2026 at 2:14 PM
ttl - Fast, modern traceroute with real-time TUI, a better mtr
Always interesting to see how a tool from almost 4 decades ago gets replaced due to modern requirements.
Always interesting to see how a tool from almost 4 decades ago gets replaced due to modern requirements.
LibSQL JDBC driver
libsql is a sqlite fork from Turso to move to more modern technologies and implement more of a community model. I was always missing a JDBC driver, but apparently dbeaver, a company creating a database management tool has stepped in.
libsql is a sqlite fork from Turso to move to more modern technologies and implement more of a community model. I was always missing a JDBC driver, but apparently dbeaver, a company creating a database management tool has stepped in.
GitHub - dbeaver/dbeaver-jdbc-libsql: LibSQL JDBC driver
LibSQL JDBC driver. Contribute to dbeaver/dbeaver-jdbc-libsql development by creating an account on GitHub.
github.com
February 14, 2026 at 1:56 PM
LibSQL JDBC driver
libsql is a sqlite fork from Turso to move to more modern technologies and implement more of a community model. I was always missing a JDBC driver, but apparently dbeaver, a company creating a database management tool has stepped in.
libsql is a sqlite fork from Turso to move to more modern technologies and implement more of a community model. I was always missing a JDBC driver, but apparently dbeaver, a company creating a database management tool has stepped in.
How Kubernetes Broke the AWS Cloud Monopoly
Interesting take on why a vendor neutral orchestration layer made it much harder for AWS to keep their cloud dominance.
Interesting take on why a vendor neutral orchestration layer made it much harder for AWS to keep their cloud dominance.
Bryan Cantrill: How Kubernetes Broke the AWS Cloud Monopoly
By introducing a vendor-neutral orchestration layer, Kubernetes shattered the "API lock-in" that once made AWS’s market dominance appear insurmountable.
thenewstack.io
February 13, 2026 at 1:56 PM
How Kubernetes Broke the AWS Cloud Monopoly
Interesting take on why a vendor neutral orchestration layer made it much harder for AWS to keep their cloud dominance.
Interesting take on why a vendor neutral orchestration layer made it much harder for AWS to keep their cloud dominance.
raft-ebpf - RAFT consensus implementation in eBPF with Rust using Aya library
Uses tc classifiers to intercept Raft packets before going through the whole kernel networking stack and sends to a ringbuffer for processing. Wondering why XDP wasn't used here.
Uses tc classifiers to intercept Raft packets before going through the whole kernel networking stack and sends to a ringbuffer for processing. Wondering why XDP wasn't used here.
GitHub - nakame/raft-ebpf: RAFT consensus implementation in eBPF with Rust using Aya library
RAFT consensus implementation in eBPF with Rust using Aya library - nakame/raft-ebpf
github.com
February 11, 2026 at 1:56 PM
raft-ebpf - RAFT consensus implementation in eBPF with Rust using Aya library
Uses tc classifiers to intercept Raft packets before going through the whole kernel networking stack and sends to a ringbuffer for processing. Wondering why XDP wasn't used here.
Uses tc classifiers to intercept Raft packets before going through the whole kernel networking stack and sends to a ringbuffer for processing. Wondering why XDP wasn't used here.
Today's hot AI take, why some companies will be faster with adoption than others - and where the top-down trend is coming from.
AI coding tools make development approachable, no matter if you're hands-on engineer or in a less-coding position (CTO, VP, etc) with limited time & context constraints.
AI coding tools make development approachable, no matter if you're hands-on engineer or in a less-coding position (CTO, VP, etc) with limited time & context constraints.
February 10, 2026 at 1:56 PM
Today's hot AI take, why some companies will be faster with adoption than others - and where the top-down trend is coming from.
AI coding tools make development approachable, no matter if you're hands-on engineer or in a less-coding position (CTO, VP, etc) with limited time & context constraints.
AI coding tools make development approachable, no matter if you're hands-on engineer or in a less-coding position (CTO, VP, etc) with limited time & context constraints.
Unconventional PostgreSQL Optimizations - Creative ideas for speeding up queries in PostgreSQL
What a great read, even if you don't use postgres. These kind of posts are so helpful in understanding how queries work and how they can be optimized.
hakibenita.com/postgresql-u...
What a great read, even if you don't use postgres. These kind of posts are so helpful in understanding how queries work and how they can be optimized.
hakibenita.com/postgresql-u...
Unconventional PostgreSQL Optimizations
Creative ideas for speeding up queries in PostgreSQL
hakibenita.com
February 9, 2026 at 1:56 PM
Unconventional PostgreSQL Optimizations - Creative ideas for speeding up queries in PostgreSQL
What a great read, even if you don't use postgres. These kind of posts are so helpful in understanding how queries work and how they can be optimized.
hakibenita.com/postgresql-u...
What a great read, even if you don't use postgres. These kind of posts are so helpful in understanding how queries work and how they can be optimized.
hakibenita.com/postgresql-u...
Extension.js - Make it very easy to develop cross-browser extensions
Noted down, if I have another semi-great idea, what my browser should do in combination with claude code and not enough time during the evenings.
Noted down, if I have another semi-great idea, what my browser should do in combination with claude code and not enough time during the evenings.
Extension.js
Extension.js makes it very easy to create, develop, and distribute cross-browser extensions with no build configuration.
extension.js.org
February 8, 2026 at 1:56 PM
Extension.js - Make it very easy to develop cross-browser extensions
Noted down, if I have another semi-great idea, what my browser should do in combination with claude code and not enough time during the evenings.
Noted down, if I have another semi-great idea, what my browser should do in combination with claude code and not enough time during the evenings.
Syntax highlighting, like GitHub
Guess it's only needed, if you need GitHub like looks, otherwise there might be other highlighters available as well.
Guess it's only needed, if you need GitHub like looks, otherwise there might be other highlighters available as well.
GitHub - wooorm/starry-night: Syntax highlighting, like GitHub
Syntax highlighting, like GitHub. Contribute to wooorm/starry-night development by creating an account on GitHub.
github.com
February 7, 2026 at 1:56 PM
Syntax highlighting, like GitHub
Guess it's only needed, if you need GitHub like looks, otherwise there might be other highlighters available as well.
Guess it's only needed, if you need GitHub like looks, otherwise there might be other highlighters available as well.
Apache Lucene 2025 wrap-up
The yearly tradition of an Apache Lucene summary continues for 2025. Nine new committers is amazing, query speedups, bulk scorers (which I still need to understand). Great to see Lucene thrive and thanks to everyone working on it!
The yearly tradition of an Apache Lucene summary continues for 2025. Nine new committers is amazing, query speedups, bulk scorers (which I still need to understand). Great to see Lucene thrive and thanks to everyone working on it!
Apache Lucene 2025 improvements - Elasticsearch Labs
Exploring Apache Lucene improvements from 2025, including SIMD optimizations, filtered vector search with ACORN, bulk scoring of vectors, and more.
www.elastic.co
February 6, 2026 at 1:59 PM
Apache Lucene 2025 wrap-up
The yearly tradition of an Apache Lucene summary continues for 2025. Nine new committers is amazing, query speedups, bulk scorers (which I still need to understand). Great to see Lucene thrive and thanks to everyone working on it!
The yearly tradition of an Apache Lucene summary continues for 2025. Nine new committers is amazing, query speedups, bulk scorers (which I still need to understand). Great to see Lucene thrive and thanks to everyone working on it!
Faster ES|QL stats with Swiss-style hash tables
ES|QL uses its own execution engine under the hood and does not reuse the existing Elasticsearch search code that powers the Query DSL. This means lots of potential optimizations that adhere to specific ES|QL use-cases.
www.elastic.co/search-labs/...
ES|QL uses its own execution engine under the hood and does not reuse the existing Elasticsearch search code that powers the Query DSL. This means lots of potential optimizations that adhere to specific ES|QL use-cases.
www.elastic.co/search-labs/...
Faster ES|QL stats with Swiss-style hash tables - Elasticsearch Labs
How Swiss-inspired hashing and SIMD-friendly design deliver consistent, measurable speedups in Elasticsearch Query Language (ES|QL).
www.elastic.co
February 5, 2026 at 1:56 PM
Faster ES|QL stats with Swiss-style hash tables
ES|QL uses its own execution engine under the hood and does not reuse the existing Elasticsearch search code that powers the Query DSL. This means lots of potential optimizations that adhere to specific ES|QL use-cases.
www.elastic.co/search-labs/...
ES|QL uses its own execution engine under the hood and does not reuse the existing Elasticsearch search code that powers the Query DSL. This means lots of potential optimizations that adhere to specific ES|QL use-cases.
www.elastic.co/search-labs/...
Flux 2 image generation model pure C inference
Runs fully local, entirely written in C, no need for python or other tooling after running make. There is a big performance difference running this on an M1 or an M4 for me.
github.com/antirez/flux...
Runs fully local, entirely written in C, no need for python or other tooling after running make. There is a big performance difference running this on an M1 or an M4 for me.
github.com/antirez/flux...
GitHub - antirez/flux2.c: Flux 2 image generation model pure C inference
Flux 2 image generation model pure C inference. Contribute to antirez/flux2.c development by creating an account on GitHub.
github.com
February 4, 2026 at 1:56 PM
Flux 2 image generation model pure C inference
Runs fully local, entirely written in C, no need for python or other tooling after running make. There is a big performance difference running this on an M1 or an M4 for me.
github.com/antirez/flux...
Runs fully local, entirely written in C, no need for python or other tooling after running make. There is a big performance difference running this on an M1 or an M4 for me.
github.com/antirez/flux...
whosthere - a TUI discovering services in your network
Written in Go. If you run it locally, it's basically an immediate reminder of figuring out all the devices in the house. Also includes a manufacturing mapping, which shows the devices that don't care :-)
github.com/ramonvermeul...
Written in Go. If you run it locally, it's basically an immediate reminder of figuring out all the devices in the house. Also includes a manufacturing mapping, which shows the devices that don't care :-)
github.com/ramonvermeul...
GitHub - ramonvermeulen/whosthere: Local Area Network discovery tool with a modern Terminal User Interface (TUI) written in Go. Discover, explore, and understand your LAN in an intuitive way. Knock Knock.. who's there? 🚪
Local Area Network discovery tool with a modern Terminal User Interface (TUI) written in Go. Discover, explore, and understand your LAN in an intuitive way. Knock Knock.. who's there? 🚪 - ramo...
github.com
February 3, 2026 at 1:56 PM
whosthere - a TUI discovering services in your network
Written in Go. If you run it locally, it's basically an immediate reminder of figuring out all the devices in the house. Also includes a manufacturing mapping, which shows the devices that don't care :-)
github.com/ramonvermeul...
Written in Go. If you run it locally, it's basically an immediate reminder of figuring out all the devices in the house. Also includes a manufacturing mapping, which shows the devices that don't care :-)
github.com/ramonvermeul...
fence - container-free sandbox for running commands with network and filesystem restrictions
Written in Go, works on osx and Linux, uses seccomp, eBPF & landlock. Includes a monitor mode. Could be used to reduce coding agent capabilities. Looks like a nice tool!
github.com/Use-Tusk/fence
Written in Go, works on osx and Linux, uses seccomp, eBPF & landlock. Includes a monitor mode. Could be used to reduce coding agent capabilities. Looks like a nice tool!
github.com/Use-Tusk/fence
GitHub - Use-Tusk/fence: Lightweight, container-free sandbox for running commands with network and filesystem restrictions
Lightweight, container-free sandbox for running commands with network and filesystem restrictions - Use-Tusk/fence
github.com
February 2, 2026 at 1:56 PM
fence - container-free sandbox for running commands with network and filesystem restrictions
Written in Go, works on osx and Linux, uses seccomp, eBPF & landlock. Includes a monitor mode. Could be used to reduce coding agent capabilities. Looks like a nice tool!
github.com/Use-Tusk/fence
Written in Go, works on osx and Linux, uses seccomp, eBPF & landlock. Includes a monitor mode. Could be used to reduce coding agent capabilities. Looks like a nice tool!
github.com/Use-Tusk/fence
ANN v3: 200ms p99 query latency over 100 billion vectors
Hierarchical clustering, rabtiq quantization, distribution. Also ASCII art diagrams, the only true documentation in a blog post.
Hierarchical clustering, rabtiq quantization, distribution. Also ASCII art diagrams, the only true documentation in a blog post.
ANN v3: 200ms p99 query latency over 100 billion vectors
Our latest ANN release supports scales of 100+ billion vectors in a single search index, with 200ms p99 query latency at 1k QPS and 92% recall.
turbopuffer.com
February 1, 2026 at 1:56 PM
ANN v3: 200ms p99 query latency over 100 billion vectors
Hierarchical clustering, rabtiq quantization, distribution. Also ASCII art diagrams, the only true documentation in a blog post.
Hierarchical clustering, rabtiq quantization, distribution. Also ASCII art diagrams, the only true documentation in a blog post.
mactop - Apple Silicon Monitor Top
A CLI tool that uses osx native APIs to extract all kinds of information from an silicon architecture, written in Go.
A CLI tool that uses osx native APIs to extract all kinds of information from an silicon architecture, written in Go.
GitHub - metaspartan/mactop: mactop - Apple Silicon Monitor Top
mactop - Apple Silicon Monitor Top. Contribute to metaspartan/mactop development by creating an account on GitHub.
github.com
January 31, 2026 at 1:56 PM
mactop - Apple Silicon Monitor Top
A CLI tool that uses osx native APIs to extract all kinds of information from an silicon architecture, written in Go.
A CLI tool that uses osx native APIs to extract all kinds of information from an silicon architecture, written in Go.
terminal-bench: a benchmark for ai agents in terminal environments
A bunch of command line tasks to execute to figure out agent skills. Few fun tasks like self signed certs, compiling a kernel, train fasttext, but also many really abstract ones.
A bunch of command line tasks to execute to figure out agent skills. Few fun tasks like self signed certs, compiling a kernel, train fasttext, but also many really abstract ones.
Terminal-Bench
A benchmark for terminal agents
www.tbench.ai
January 30, 2026 at 1:56 PM
terminal-bench: a benchmark for ai agents in terminal environments
A bunch of command line tasks to execute to figure out agent skills. Few fun tasks like self signed certs, compiling a kernel, train fasttext, but also many really abstract ones.
A bunch of command line tasks to execute to figure out agent skills. Few fun tasks like self signed certs, compiling a kernel, train fasttext, but also many really abstract ones.
Fusio - provides file operations on multiple storages across various async runtimes
Mixed use cases, unified APIs, more abstractions. Local disk can be cache-only, spill-to-disk, short-term persistence for acks, blob storage can be state share, data precomputation.
Mixed use cases, unified APIs, more abstractions. Local disk can be cache-only, spill-to-disk, short-term persistence for acks, blob storage can be state share, data precomputation.
GitHub - tonbo-io/fusio: Fusio provides file operations on multiple storages across various async runtimes.
Fusio provides file operations on multiple storages across various async runtimes. - tonbo-io/fusio
github.com
January 29, 2026 at 1:56 PM
Fusio - provides file operations on multiple storages across various async runtimes
Mixed use cases, unified APIs, more abstractions. Local disk can be cache-only, spill-to-disk, short-term persistence for acks, blob storage can be state share, data precomputation.
Mixed use cases, unified APIs, more abstractions. Local disk can be cache-only, spill-to-disk, short-term persistence for acks, blob storage can be state share, data precomputation.
Reposted by Alexander Reelsen
Can you beat 180KB? I created a challenge to reduce a dataset as much as possible 🏆
my approach uses delta encoding & prefix compression + zstd(22) compression to reduce 25MB -> 180KB
github.com/agavra/bit-g...
my approach uses delta encoding & prefix compression + zstd(22) compression to reduce 25MB -> 180KB
github.com/agavra/bit-g...
GitHub - agavra/bit-golf: a compression golf challenge for GitHub event data
a compression golf challenge for GitHub event data - agavra/bit-golf
github.com
January 28, 2026 at 10:16 PM
Can you beat 180KB? I created a challenge to reduce a dataset as much as possible 🏆
my approach uses delta encoding & prefix compression + zstd(22) compression to reduce 25MB -> 180KB
github.com/agavra/bit-g...
my approach uses delta encoding & prefix compression + zstd(22) compression to reduce 25MB -> 180KB
github.com/agavra/bit-g...
docfind - a high-performance document search engine built in Rust with WebAssembly support
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
GitHub - microsoft/docfind: A high-performance document search engine built in Rust with WebAssembly support.
A high-performance document search engine built in Rust with WebAssembly support. - microsoft/docfind
github.com
January 28, 2026 at 1:56 PM
docfind - a high-performance document search engine built in Rust with WebAssembly support
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
hardwood - A minimal dependency implementation of Apache Parquet in Java
Looks nice, parsing only for now, intended as a replacement for parquet java, but heavily reduced dependencies (only compression libraries).
github.com/hardwood-hq/...
Looks nice, parsing only for now, intended as a replacement for parquet java, but heavily reduced dependencies (only compression libraries).
github.com/hardwood-hq/...
GitHub - hardwood-hq/hardwood: A minimal dependency implementation of Apache Parquet
A minimal dependency implementation of Apache Parquet - hardwood-hq/hardwood
github.com
January 27, 2026 at 1:56 PM
hardwood - A minimal dependency implementation of Apache Parquet in Java
Looks nice, parsing only for now, intended as a replacement for parquet java, but heavily reduced dependencies (only compression libraries).
github.com/hardwood-hq/...
Looks nice, parsing only for now, intended as a replacement for parquet java, but heavily reduced dependencies (only compression libraries).
github.com/hardwood-hq/...
atlcli - a CLI for Atlassian products.
Write documentation in markdown, sync bidirectionally with Confluence. Manage Jira issues from your terminal.
atlcli.sh
Write documentation in markdown, sync bidirectionally with Confluence. Manage Jira issues from your terminal.
atlcli.sh
atlcli
Extensible CLI for Atlassian products
atlcli.sh
January 26, 2026 at 1:56 PM
atlcli - a CLI for Atlassian products.
Write documentation in markdown, sync bidirectionally with Confluence. Manage Jira issues from your terminal.
atlcli.sh
Write documentation in markdown, sync bidirectionally with Confluence. Manage Jira issues from your terminal.
atlcli.sh
psc - the ps utility, with an eBPF twist and container context
a fast process scanner that uses eBPF iterators and Google CEL, reduces piping and and scripting when trying to find the right processes. TIL about CEL, an expression language, with bindings for Java, Go, C++.
a fast process scanner that uses eBPF iterators and Google CEL, reduces piping and and scripting when trying to find the right processes. TIL about CEL, an expression language, with bindings for Java, Go, C++.
GitHub - loresuso/psc: the ps utility, with an eBPF twist and container context
the ps utility, with an eBPF twist and container context - loresuso/psc
github.com
January 25, 2026 at 1:56 PM
psc - the ps utility, with an eBPF twist and container context
a fast process scanner that uses eBPF iterators and Google CEL, reduces piping and and scripting when trying to find the right processes. TIL about CEL, an expression language, with bindings for Java, Go, C++.
a fast process scanner that uses eBPF iterators and Google CEL, reduces piping and and scripting when trying to find the right processes. TIL about CEL, an expression language, with bindings for Java, Go, C++.
mailpit - An email and SMTP testing tool with API for developers
Useful for testing via testcontainers, single binary, written in Go, web UI, link checking, html compatibility check, unsubscribe validation - nice set of features of testing emails on the receiver side.
Useful for testing via testcontainers, single binary, written in Go, web UI, link checking, html compatibility check, unsubscribe validation - nice set of features of testing emails on the receiver side.
GitHub - axllent/mailpit: An email and SMTP testing tool with API for developers
An email and SMTP testing tool with API for developers - axllent/mailpit
github.com
January 24, 2026 at 1:56 PM
mailpit - An email and SMTP testing tool with API for developers
Useful for testing via testcontainers, single binary, written in Go, web UI, link checking, html compatibility check, unsubscribe validation - nice set of features of testing emails on the receiver side.
Useful for testing via testcontainers, single binary, written in Go, web UI, link checking, html compatibility check, unsubscribe validation - nice set of features of testing emails on the receiver side.
tuicr - A human-in-the-loop code review TUI for AI-generated changes
Fascinating to see, how development moves away from the IDEs and the web (GitHub, GitLab) suddenly.
github.com/agavra/tuicr
Fascinating to see, how development moves away from the IDEs and the web (GitHub, GitLab) suddenly.
github.com/agavra/tuicr
GitHub - agavra/tuicr: A human-in-the-loop code review TUI for AI-generated changes.
A human-in-the-loop code review TUI for AI-generated changes. - agavra/tuicr
github.com
January 23, 2026 at 1:56 PM
tuicr - A human-in-the-loop code review TUI for AI-generated changes
Fascinating to see, how development moves away from the IDEs and the web (GitHub, GitLab) suddenly.
github.com/agavra/tuicr
Fascinating to see, how development moves away from the IDEs and the web (GitHub, GitLab) suddenly.
github.com/agavra/tuicr