Vlad Mihalcea @vlad_mihalcea
@Java Champion working on @Hypersistence Optimizer, author of High-Performance Java Persistence. Blogging at https://t.co/vk0cYzrIit vladmihalcea.com Cluj, Transylvania Joined December 2013-
Tweets53K
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Followers78K
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Following145
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Likes34K
A beginner’s guide to Serializability vladmihalcea.com/serializabilit…
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SQL Server Foreign Key Locking vladmihalcea.com/sql-server-for…
Vlad Mihalcea retweeted
Nice explanation—using the Universal Scalability Law (USL)—of database connection pools and how adding too many connections can DEGRADE throughput performance. Here's some live data from #PostgreSQL
Nice explanation—using the Universal Scalability Law (USL)—of database connection pools and how adding too many connections can DEGRADE throughput performance. Here's some live data from #PostgreSQL https://t.co/oLltsQqYsV
When software developers unleash the artist within
SQL Server deadlock trace flags vladmihalcea.com/sql-server-dea…
PostgreSQL triggers and isolation levels vladmihalcea.com/postgresql-tri…
Vlad Mihalcea retweeted
Maximum number of database connections vladmihalcea.com/maximum-databa…
How does database pessimistic locking interact with INSERT, UPDATE, and DELETE SQL statements vladmihalcea.com/how-does-datab…
PostgreSQL trigger consistency check vladmihalcea.com/postgresql-tri…
A beginner’s guide to the Write Skew anomaly, and how it differs between 2PL and MVCC vladmihalcea.com/write-skew-2pl…
Vlad Mihalcea retweeted
The best way to use the JPA OneToOne optional attribute vladmihalcea.com/best-way-oneto… Discussions: discu.eu/q/https://vlad… #java #programming by @vlad_mihalcea
Logical vs physical clock optimistic locking vladmihalcea.com/logical-vs-phy…
The best way to use the OneToOne optional attribute vladmihalcea.com/best-way-oneto…
How do UPSERT and MERGE work in Oracle, SQL Server, PostgreSQL and MySQL vladmihalcea.com/how-do-upsert-…
Vlad Mihalcea retweeted
Read and write skew in #database transactions can lead to inconsistent results Changing the transaction isolation level affects when these are possible @vlad_mihalcea shows how these occur & lists when they're possible in the major databases vladmihalcea.com/a-beginners-gu…
A beginner’s guide to Read and Write Skew phenomena vladmihalcea.com/a-beginners-gu…
Vlad Mihalcea retweeted
Now you can easily find my video content at sivalabsacademy.com #java #spring #springboot #microservices
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@vlad_mihalcea Can you imagine what the Pro version looks like :-)
Nice explanation—using the Universal Scalability Law (USL)—of database connection pools and how adding too many connections can DEGRADE throughput performance. Here's some live data from #PostgreSQL
Maximum number of database connections vladmihalcea.com/maximum-databa…
@vlad_mihalcea Yeah, I tend to say that database connections are a finite resource, similar to RAM or CPU utilization. At some point, adding more connections will make things slower, not faster.
With the awesome @DevOpsBarbie and @webchick 😍😍
Vlad has a funny idea of what is "a beginner."
A beginner’s guide to the Write Skew anomaly, and how it differs between 2PL and MVCC vladmihalcea.com/write-skew-2pl…
@lukaseder @vlad_mihalcea I enjoy the Buzz of a good conf/meetup. Meeting Interesting ppl is the Best Part. learn from discussions. Presenting a topic makes me "Think about it again". And I've been to Cluj, and to St. Gallen. (but really: I do it for the Roadtrips, the Food and the Drinkies...)
The best way to use the JPA OneToOne optional attribute vladmihalcea.com/best-way-oneto… Discussions: discu.eu/q/https://vlad… #java #programming by @vlad_mihalcea
@vlad_mihalcea @NiestrojRobert @sivalabs And if they change the DB they will realize that it was not portable because no DB has the same behavior when two transactions work on the same data set 🤣
I haven't spoken at any conference since I had small kids, for ~5 years (COVID helped with the decision). I do miss: speaker's dinners, talking to customers, the memes. I don't miss: travelling, lack of sleep, preparing new talks. I don't think I'll ever go back to speaking.
DeeBee is off on an adventure!
Read and write skew in #database transactions can lead to inconsistent results Changing the transaction isolation level affects when these are possible @vlad_mihalcea shows how these occur & lists when they're possible in the major databases vladmihalcea.com/a-beginners-gu…
Now you can easily find my video content at sivalabsacademy.com #java #spring #springboot #microservices
Mars and the moon, two photos captured when Mars was in different positions. The first one is a composite captured using two cameras, the second is not a composite, shot using one huge 14” scope!
OMW to Barcelona for a company offsite and wearing my @Feyenoord jersey as the win the cup yesterday !
Even a baby knows you need to hurry up with buying cheaper #POUG2024 tickets. poug2024.konfeo.com/en/groups
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