Re: Fast insertion indexes: why no developments
От | Leonardo Francalanci |
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Тема | Re: Fast insertion indexes: why no developments |
Дата | |
Msg-id | 1383061783.2243.YahooMailNeo@web172602.mail.ir2.yahoo.com обсуждение исходный текст |
Ответ на | Re: Fast insertion indexes: why no developments (Merlin Moncure <mmoncure@gmail.com>) |
Ответы |
Re: Fast insertion indexes: why no developments
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Список | pgsql-hackers |
> Another point to add: I don't really see btree as a barrier to > performance for most of the problems I face. The real barriers to > database performance are storage, contention, and query planning. Ehm that's true for regular OLTP stuff, which I understand is what most (95%?) of people use/need. But if you try to insertrows into a 50M table with a couple of indexes, btrees just can't keep up. Of course, you can't have it all: fast at big table insertion, good contention, good query times... > Postgres btreee indexes are pretty fast and for stuff like bulk > insertions there are some optimization techniques available (such as > sharding or create index concurrently). At the moment I'm relying on partitioning + creating indexes in bulk on "latest" table (the partitioning is based on time).But that means K*log(N) search times (where K is the number of partitions). That's why I gave a look at these different indexing mechanisms.
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