Oren Eini

aka Ayende Rahien

Oren Eini

CEO of RavenDB

a NoSQL Open Source Document Database

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oren@ravendb.net

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Couchbase vs RavenDB Performance at Rakuten Kobo Whitepaper

Aug 05 2007

Rhino ETLTransactions

time to read 1 min | 120 words

Well, that turned out to be really easy, thanks to Tomas Restrepo, who pointed me directly to the right place.

You can now write:

target withTransaction:
	transaction:
		cookie = Execute("CopyUsers")
		Execute("WillThrow").After(cookie)
		
target transactionWithIsolationLevel:
	transaction(IsolationLevel.Serializable):
		cookie = Execute("CopyUsers")
		Execute("WillThrow").After(cookie)

As far as I am concerned, the way it works is magic, because the whole thing is still heavily multi threaded and I didn't even thought about checking whatever I have MSDTC installed ( I am on Windows 2003, so apparently yes, because it works ).

This mostly complete the baseline features that I consider mandatory, which means that I now can focus on the other ends, meaning focusing on adding more sources and destinations.

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More posts in "Rhino ETL" series:

(16 Oct 2007) Importing Data into MS CRM
(13 Aug 2007) Writing to files
(05 Aug 2007) Web Services Source
(05 Aug 2007) Transactions
(04 Aug 2007) Targets
(04 Aug 2007) Aggregates
(26 Jul 2007) Thinking about Joins & Merges
(24 Jul 2007) First Code Drop

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FUTURE POSTS

Partial writes, IO_Uring and safety - one day from now
Configuration values & Escape hatches - 4 days from now
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Challenge: Giving file system developer ulcer - 11 days from now

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20 Jan 2025 - What does this code do?
Answer (13):
22 Jan 2025 - What does this code do?
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RECENT COMMENTS

Dmitry, Yes, but this is _known_ to be a 64 bits system - since we are allocating 3GB (not possible in 64 bits). Note t...

By Oren Eini on Answer: What does this code do?
That's why it is a good idea to compare the return value of `write` to the buffer size. "size_t" can be 32-bit on some system...

By Dmitry on Answer: What does this code do?
There's a reason we miss `write_exact` and `read_exact` from the standard library. In fact, I am surprised the chunk is actua...

By Pyth0n on Challenge: What does this code do?
kpvleeuwen, I agree, unfortunately I don't have anyone to ask off the top of my head. Thanks, I fixed the headers.

By Oren Eini on Performance discovery: IOPS vs. IOPS
It could be interesting to reach out to storage firmware developers and ask what write patterns they think would be useful ex...

By kpvleeuwen on Performance discovery: IOPS vs. IOPS

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