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.
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.
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.
According to a Monte Carlo/Wakefield survey, 74% of organizations now report it. The failure is usually the ingestion path, not the dashboard. ‘Building a real-time data transport layer with Confluent Cloud and AWS' demonstrates the change-data-capture transport pattern. Read the tutorial in AWS Marketplace [5]. The Data Pipelines and Lineage guide goes a level up from the tutorial: lineage from source to AI agent response, data quality, pipeline observability. See the
A 4B Qwen model was trained with supervised fine-tuning and reinforcement learning to generate faster PostgreSQL query plans. Across 113 join-heavy queries, its best-of-three results achieved a 1.81x geometric mean speedup over PostgreSQL's default plans and reduced total workload latency by 44.7%, showing small models can learn useful database optimization strategies from execution-time feedback.
PlanetScale's Neki horizontally shards standard PostgreSQL while presenting applications with a single Postgres connection, using routers, sidecars, replication, and automated failover to manage distributed queries and availability. It can also reshard data, move tables, and perform online schema changes without taking the database offline.
Consistent hashing smooths load by assigning each server many virtual points, but those points can become a major memory cost at global scale. Cloudflare reworked Pingora's hash-ring representation, sorting, and rollout path to reclaim more than 100 TB of RAM. The article connects the distribution math to a staged migration that contained cache churn and preserved rollback control.
A PostgreSQL hypertable query was fast by hand but intermittently stalled because JDBC prepared statements switched to generic plans. Without parameter values, the planner could not exclude old chunks and spent seconds planning instead of executing. Logging the bind phase exposed the fault, while disabling server-side prepared statements and reducing chunk count restored predictable latency.
System One models act as fast, general-purpose classifiers that make many simple decisions in parallel rather than generating long responses. Two useful patterns are to give them layered goals for real-time tasks and use tournament-style comparisons when choosing the best option from a large set.
A high-cardinality span attribute can quietly multiply metric series even when trace volume and sampling remain flat. Sampling reduces stored trace bytes, not the distinct label combinations produced upstream by span metrics. Keep identifiers on traces, bucket them before metrics aggregation, and set cardinality and expiration limits so one deployment cannot turn a temporary dimension into a lasting observability bill.
A GitHub outage was triggered when a background cleanup job saturated a shared database primary, while monitoring incorrectly showed the cluster as healthy because it only watched replica lag. Long request timeouts and repeated retries then amplified the failure, highlighting how partial health signals and retry storms can turn database saturation into a site-wide incident.
Every new monitoring tool, service, or "quick integration" adds another dashboard to the pile—and before you know it, you're spending more time switching between tools than actually building. With Microsoft Azure [13], your entire stack lives in one workspace: infrastructure, data, AI, and more. See how Azure brings it all
pg-jev brings natural-language classification directly into PostgreSQL, letting you filter, rank, and classify rows with Jev-powered SQL functions that return calibrated probabilities instead of generated text. It batches and caches evaluations to make semantic queries practical without embeddings or vector indexes.
dbt Charts is an open-source, YAML-based dashboard language designed for humans and AI agents to build governed charts in code rather than through a BI interface. Dashboards stay auditable and version-controlled alongside dbt models, with validation catching broken queries and poor visualisations before they ship.
JSON ingestion often spends significant time locating structural characters before parsing values. A new simdjson implementation uses ARM SVE2's match instruction to classify those characters more directly, improving indexing throughput by 3-9% on Graviton 4 and 5. The full parser gain is smaller, but the patch shows how targeted SIMD changes can improve a heavily optimized data path.
Jev can act as a fast, inexpensive verification layer for extracting structured data from 10-K filings: another tool finds candidate values, then Jev selects the correct one and returns calibrated confidence. This avoids unreliable generate-and-parse loops while routing ambiguous cases to larger models or humans.
An index matching ORDER BY in Postgres can still hurt when the filtered rows sit far down that index: inspect Rows Removed by Filter, test representative parameters, and use a composite index that matches both the filter and ordering.
breaks it down. See how you can:
* Build dashboards to collate key monitoring data from 700+ integrations [6] and visualize it all in one place * Correlate traces, logs, and infrastructure metrics to get deeper context for troubleshooting * Utilize unified analytics visibility to maintain and optimize your business intelligence
LangChain built a paid-media agent that analyzes campaign data, recommends changes, and applies approved actions, helping paid media reach 20% of its marketing pipeline while cutting qualified lead costs. Its key design principle is to use models for judgment, code for reliable calculations and safeguards, and human approvals for consequential actions.
Form3 runs its payment platform active-active-active across AWS, Google Cloud, and Azure, treating each provider like an availability zone. Kubernetes, NATS JetStream, and CockroachDB span all three clouds, while custom DNS, networking, and disruption controls preserve quorum. Its US deployment deliberately uses active-standby instead, showing resilience architecture should follow regulatory needs, latency limits, and cost.
Graph embeddings turn connected entities into vectors for similarity search, GraphRAG, and graph machine learning, but Node2Vec's random walks create huge intermediate datasets and scale poorly. FastRP replaces that pipeline with iterative neighbor aggregation. A Rust/DataFusion implementation runs out-of-core, matched Node2Vec-level predictive quality in small tests, and processed an eight-million-node graph in about 15 minutes.
Before defaulting to an LLM for text classification, benchmark a cheap and near-instant classical model against your available labels, expected volume, and acceptable error rate. In a small support-ticket experiment, TF-IDF accuracy rose from 40% to 60% as training data increased from 2 to 10 examples per category, but intent-based ambiguities remained, suggesting a hybrid approach where LLMs bootstrap labels or handle difficult cases while the classical model processes routine ones.
PostgreSQL 19's pg_plan_advice serializes join order, scan type, join method, and parallelism into replayable plan guidance, while pg_stash_advice applies it by query ID. Structural strings make plan diffs stable enough for CI and upgrades, but selective pinning matters: preserving one proven decision is safer than freezing every choice as data distributions and statistics change.
Redis executes commands on a single thread, so one expensive operation such as KEYS, FLUSHALL, a large DEL, or an unbounded collection read can block every client and cause sudden latency spikes even when CPU and network usage look normal. Use SLOWLOG and LATENCY tools to find offenders, replace full scans with cursor-based SCAN commands, use UNLINK for large deletions, shard oversized keys, and disable dangerous commands in production.
Instead of migrating every legacy dashboard, move the trusted metrics, definitions, and business logic that power them. Keep only frequently used dashboards and let AI analytics handle one-off questions using the same governed context.
When Claude Code needs to look at a data file, it writes a small Python script, runs it, reads the output, and guesses at column names and types along the way. The DuckDB team's plugin points the agent at the DuckDB CLI instead, so a local file, a remote file, or an Iceberg table behind a login is just a table it can query, with skills for format conversion, object storage, spatial data, documentation search, and session recall.
PyIceberg 0.12.0 adds REST-catalog views, conflict-aware commit retries, incremental append scans, Iceberg v3 geometry and geography types, and early use of the File Format API. Correctness fixes cover partition pruning, deletion vectors, manifests, timestamps, and conversions, while Python 3.14 and stronger CI and security support broaden production readiness.
Search systems often need a useful set, not ten versions of the same result. They can ask an AI to explore several angles, but generating those searches one by one is slow and expensive. Retrieve-for-Train teaches a smaller model the exploration strategy ahead of time, letting it produce complementary searches together. Google reports broader result coverage with 12-20x lower query-generation latency.
Airbnb turned a months-long, notebook-heavy process for analyzing support conversations into Insight Miner, an agent harness that encodes extract-embed-cluster workflows, prompt tuning, hard-example mining, and contrastive labeling. Investigations now run in days across languages and geographies, while reproducible traces let experts audit evidence and spend more time on ambiguous samples, hypotheses, and methodological improvements.
PostgreSQL row-level security can fail closed beneath EF Core query filters, blocking cross-tenant reads and writes even through raw SQL or attached entities when the application uses non-owner roles and reset tenant context on every pooled connection.
Snowflake and Databricks can place equivalent deterministic filters at very different stages, so predicate pushdown should be verified in execution plans rather than assumed.
A simple terminal workflow combining AI agents with DuckDB can handle fast, reliable analysis, data cleaning, and secure access without heavyweight tools or complex semantic layers.
2026.09.17·
thefulldatastack.substack.com·14 min read·TLDR Data
What if Postgres compute was stateless? Imagine a branch that is a metadata operation that runs in seconds, not hours. What if you could also run transactions and analytics on the same copy of data in real time without delays or CDC? One architecture, two problems solved.
Lyft rebuilt its outdated neighborhood travel-time dataset with more accurate ETAs, better coverage, drivable-location filtering, and self-service fields, improving how pricing and driver heatmaps understand nearby supply. It will now refresh every six months, with time-aware ETAs planned to reflect changing traffic throughout the week.
Pinterest's Manas retrieval platform serves billions of embeddings across Home Feed, Search, Related Pins, Ads, and Notifications. Quantization is cutting serving cost by 20–30%, SSD-backed ANN experiments reduce memory and CPU needs, and multi-embedding retrieval moves beyond single-vector two-tower matching toward richer candidate scoring.
Diskless Kafka keeps the Kafka API while moving durable payload storage from broker-owned logs to object storage and strongly consistent metadata. The tradeoff is not just cheaper retention: batching, offset assignment, recovery, compaction, latency, and feature support all change, making diskless topics a per-workload storage choice rather than a universal Kafka replacement.
Coding agents now produce competent PostgreSQL schemas, but they tend to stack indexes onto hot operational tables. In a measured support-ticket workload, extra indexes nearly doubled update time and WAL while increasing VACUUM work. Index review needs write-path evidence, HOT-update awareness, and usage counters, not just fast read plans.
AI agents can return successful, well-grounded responses that are still wrong because they retrieved invalid context or followed a faulty execution path. Debugging requires end-to-end traces of model calls, tool calls, retrieval inputs, and outputs, plus separate tests for deterministic system behavior and answer quality.
Most AI agents fail confidently, not loudly. They act on stale data and produce wrong refunds, outdated quotes, and contradictory decisions. A context engine [12] computes real-time values at the moment of each decision, so your agents act on current, accurate
PlanetScale set out to run 1 million queries per second against Neki, its new sharded Postgres, hit that on 5 shards almost immediately, then kept going until 512 shards were serving 118 million queries per second across 1.22 PiB of data. The workload is deliberately narrow: a single-shard point select fetching one row by primary key with no writes, joins, or cross-shard queries, which is what makes the scaling curve clean.