New posts for Spring and Hibernate

2026-11-06 01:05:17 +05:30
parent b83cc9988e
commit 0245c00033
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+Primary-key choice vs database file size, H2 file database (MVStore B-tree), file size after the database is closed, 200000 rows per variant, batch_size=50, flush+clear every 50 rows
+H2 specific: this is H2's storage engine, not PostgreSQL's or InnoDB's. Timings are indicative (one run, one machine).
+
+variant                                   load ms     file KiB
+bigint sequence (allocationSize 50)          1244         4944
+UUID v4  random                              2280       101428
+UUID v7  time-ordered                        1314        12960
+UUID v7  as CHAR(36)                         1528        52948