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Introduce new patterns for direct sql that are safe and fast. MiniSql is not prone to memory bloat that can happen with direct PG usage. It also has an extremely fast materializer and very a convenient API - DB.exec(sql, *params) => runs sql returns row count - DB.query(sql, *params) => runs sql returns usable objects (not a hash) - DB.query_hash(sql, *params) => runs sql returns an array of hashes - DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array - DB.build(sql) => returns a sql builder See more at: https://github.com/discourse/mini_sql
27 lines
717 B
Ruby
27 lines
717 B
Ruby
module Jobs
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class CleanUpCrawlerStats < Jobs::Scheduled
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every 1.day
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def execute(args)
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WebCrawlerRequest.where('date < ?', WebCrawlerRequest.max_record_age.ago).delete_all
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# keep count of only the top user agents
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DB.exec <<~SQL
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WITH ranked_requests AS (
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SELECT row_number() OVER (ORDER BY count DESC) as row_number, id
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FROM web_crawler_requests
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WHERE date = '#{1.day.ago.strftime("%Y-%m-%d")}'
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)
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DELETE FROM web_crawler_requests
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WHERE id IN (
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SELECT ranked_requests.id
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FROM ranked_requests
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WHERE row_number > #{WebCrawlerRequest.max_records_per_day}
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)
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SQL
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end
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end
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end
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