EDS - replacing record data slows down database

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if you often use db_replace_data() or db_delete_record() database gets
fragmented, i.e it grows and there are a lot of small chunks of unused space, and
consequence is ever growing and ever slower database. you have to use
db_compress() to solve the problem.

solution would be to define maximum size of record keys and data. and then junk
data would be addded to every record. that way db_replace_data() wouldnt need
reallocating and db_insert() would use up whole free chunk.

we would need new functions:
db_insert_ex (object key, object data, integer key_max_size, integer
data_max_size)
	or maybe db_set_max_record_size (integer max_record_size)

and db_compressed_object_size (object x) which will help us determinign maximum
size of keys and data.

am i right or am i missing something?

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