Stefan Hengl

spike: change regex engine

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Regex dominates our CPU profiles for webserver. The top 10% profiles are almost exclusively regex. Changing from Go's engine to something faster would have big impact on the critical path....

Webserver creates a new matchTree for every shard it searches. The structure of the matchTree, however, only depends on the query. Some trees, like `substrMatchTree`, call 'iterateNgrams` and thus depend...

Memory is our dominant cost factor for operating Zoekt. When evaluating alternatives to Zoekt in the past, we struggeled to get good numbers for MEM/Megabyte of indexed data. Compound shards...

fix interaction between "tombname" and "untomb"

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The shard logs show that some shards are restored just after they have been soft deleted. IE in the logs we see "tombname" followed directly by "untomb". The timestamp show...

I introduced a new typo while fixing another one in #60822 :-( Test plan: N/A

Repro: Query: https://sourcegraph.sourcegraph.com/search?q=context:global+r:sourcegraph%403524605++import+-content:package+lang:go&patternType=keyword&sm=0 File `tls-misc.go` has the term `package` in it. /cc @sourcegraph/search-platform

insights: persist patternType in db

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This PR refactors insights to support the upcoming Keyword Search GA. New insights are always persisted with `patternType:`. Queries of existing insights are updated with `patternType:standard ` if they don't...

structural search on S2 doesn't honor lang filter

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The following query returns results from various languages on S2 ``` r:^github\.com/sourcegraph/sourcegraph$ lang:yaml if ... else ... patternType:structural ``` However, locally and on .com the language filter works - S2:...