poor performance because of slow storage

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  • Markus Breuer

    poor performance because of slow storage

    I currently have some trouble because of a misconfigured storage. The
    technicans are involved, but the reconfiguration will requires several days.

    The main problem is a small table acting as dictionary. while column 1
    is the key, a query will delivery the value of column 2. The select is
    not critical, but the frequently changes to the table. Insert and delete
    operations cause many i/o traffic on our storage.

    Our reading applications use following sql-statement to perform a lookup:

    SELECT col2
    FROM my_table
    WHERE col1='...'

    Is there any chance to tune this table without the need to change the
    reading apps? I think of a table in memory, which does not force i/o
    traffic on the storage. Lost data after a crash is no important, this
    table only holds current data. In half an hour the data is old.

    Any ideas?

    regards, markus
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