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<div style="display: none; max-height: 0px; overflow: hidden;">Horizon audited over 5,000 AI benchmark tasks across 20 datasets and confirmed 29 were broken, with problems including leaked answers </div>
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<h1><strong>TLDR Data <span id="date">2026-09-24</span></strong></h1>
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<strong>Announcing Apache Fluss 1.0: Real-Time Data Foundation for AI (15 minute read)</strong>
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Apache Fluss 1.0 introduces a stateless Rust HTTP Gateway for metadata, table operations, and batch writes, alongside native Python access and deeper Flink, Spark, Hudi, and Paimon integration. It adds row and log TTLs, predicate pushdown, coordinator high availability, resource protection, and cleanup features, moving the project from incubator-era capabilities toward production real-time lakehouse workloads.
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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<strong>High-Throughput OLTP in Three Simple Steps (6 minute read)</strong>
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High-throughput transaction systems benefit from co-design rather than copying a connection-pool pattern from a general-purpose database. TigerBeetle models linked transfers atomically, aggregates balances without scans, batches operations automatically while a request is in flight, and prefers time-ordered identifiers for fast idempotency checks. Its benchmark illustrates why batching and ordered IDs can matter more than adding clients.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.honeycomb.io%2Fblog%2Fhow-adaptive-tail-sampling-works%3Futm_source=tldrdata/1/010001a0d2e77cd3-af5525b1-9d7c-414c-bcbd-e44469b6b4c6-000000/BMh51a8-F4YnV2vcsaHmXw8P8DEUqbSamhrgjhdi548=452">
<span>
<strong>How Adaptive Tail Sampling Works in the OpenTelemetry Collector (7 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Fixed-rate sampling often discards the rare traces needed in an incident, while ordinary tail sampling loses statistical weights. An adaptive tail sampler for the OpenTelemetry Collector buffers traces, applies ordered rules, and attaches W3C probability thresholds so downstream counts can be reweighted. It adapts by route and service, bounds memory under load, and is progressing upstream toward alpha.
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<h1><strong>Quick Links</strong></h1>
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<strong>Profile your Polars queries (2 minute read)</strong>
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Polars now exposes a query profiler for local open-source workloads.
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fcommoncrawl.org%2Fblog%2Fhost--and-domain-level-web-graphs-july-august-and-september-2026%3Futm_source=tldrdata/1/010001a0d2e77cd3-af5525b1-9d7c-414c-bcbd-e44469b6b4c6-000000/XXg4_fgqXjTy0K0phwDHeXeoRAYVasYGtFmynLcbRAg=452">
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<strong>Host- and Domain-Level Web Graphs July, August, and September 2026 (3 minute read)</strong>
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Common Crawl has released open web graphs covering 245.8 million hosts and 133.2 million domains.
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