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MySQL is an open-source relational database management system used for web and enterprise applications, supporting SQL, replication, and engines like InnoDB.
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Postgres locks both tables with SHARE ROW EXCLUSIVE when a migration adds a foreign key, blocking writes until every child row is scanned. A dev.to guide on Laravel migrations splits the change into two statements so the slow scan stops holding up the app's writes.
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Django's icontains made Postgres filter UPPER(product_name) while a team's pg_trgm index covered the raw column, so product searches ran for several seconds. Having the indexes proved nothing until the team read the generated SQL beside the query plan.
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CVE-2026-67401 lets an ordinary cPanel mail account escalate to root through a SQL injection in the EmailTrack delivery-log feature. cPanel disclosed the vulnerability class but has not published the vulnerable parameter or the query behind it.
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PostgreSQL 18.3 accepts three kinds of ON DELETE SET NULL key at creation and rejects them only when a parent with children is deleted. A Schemity post that tested each case says to pick every key's action by what the child row means once its parent is gone.
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Before v25, one surviving tablet that missed the relay-log deadline could fail an entire EmergencyReparentShard. Vitess says the new release filters that wait down to tablets sharing the leading history.
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Laravel 13.x adds whereBinary and three variants, compiling on MySQL to = binary ? with the value bound. The fix applies per call site, so the column collation stays as it is and every query you leave alone behaves as before.
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A dev.to benchmark on Laravel 13.31.0 and PHP 8.4.22 splits a request into framework bootstrap and loaded data. The much-quoted 20MB to 30MB per-request figure turns out to measure PHP with OPcache disabled.
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A dev.to walkthrough of the n8n 1.x to 2.0 upgrade treats it as a host-configuration review, because the defaults that changed decide what Code nodes may read and which nodes exist at all.
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A dev.to account traces missing adgroup data for a platform's largest clients to the count query behind a page index, and its case that AI agents need stable cursors rests on the same four-year-old incident.
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Laravel calls the breaking changes in 13 minimal, and the upgrade guide still flags about nineteen of them. Two land in defaults that every application touches: the request forgery middleware and the cache config.
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Four Canadian jurisdictions stop moving their clocks at 2:00 AM on 1 November 2026, and tz release 2026d covers three of them. Anything running an older copy will take an hour off a clock that no longer moves.
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Taking the password out of a Lambda's environment variables costs five console steps and one inline rds-db:connect policy, and buys a database credential that expires fifteen minutes after boto3 mints it.
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A dev.to design guide moves JSON documents and vector search into one PostgreSQL instance, and the evidence it offers is operational: deleted ETL pipelines and sync bugs, with no query timings on either side.
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One engineer maintains 488 units of Object Pascal over 342 MySQL tables, and the tooling layer added beside it sits in a tools/ directory separate from what users install and what Delphi units depend on.
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Aleksander Frolov loaded a million orders into MySQL 8.4.11 and PostgreSQL 17.11 and found the aggregating view 13 times slower on Postgres, even though the planner pushed both predicates below the grouping.
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InnoDB applies MVCC to reads and pure locking to writes, so under the default Repeatable Read the same predicate can be answered from a snapshot frozen at your first statement or from the newest committed row.
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The 118.5 million read figure came from 512 PostgreSQL primaries answering primary-key lookups, with no replicas attached and 87.3 percent of reads served from cache at peak. Writes, failover and cross-shard work were not in the test.
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A round-trip parse check over 2,249 of sqlfluff's own test fixtures returned 39 suspicious outputs. Two survived triage as real bugs, and one of them fires on default config against ordinary MySQL DDL.
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GitHub's August availability report reads as a capacity argument rather than a bug report, with the Actions fix described as containment and the harder database failovers still ahead of it.
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Four years after shipping an orchestrator that wanted a Kafka cluster and an Elasticsearch cluster to schedule a job, Kestra has rebuilt the engine around that complaint, keeping the Apache 2.0 licence in place.
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