The Heartbleed Hit List: The Passwords You Need to Change Right Now
An excellent list of aspects of the Heartbleed OpenSSL bug which need to be thought about/talked about/considered
(tags: heartbleed openssl bugs exploits security ssl tls web https)
Does the heartbleed vulnerability affect clients as severely?
‘Yes, clients are vulnerable to attack. A malicious server can use the Heartbleed vulnerability to compromise an affected client.’ Ouch.
R3: Announcing the next generation of Amazon EC2 Memory-optimized instances
pricing announced, and available in most regions
Scalable Atomic Visibility with RAMP Transactions
Great new distcomp protocol work from Peter Bailis et al:
We’ve developed three new algorithms—called Read Atomic Multi-Partition (RAMP) Transactions—for ensuring atomic visibility in partitioned (sharded) databases: either all of a transaction’s updates are observed, or none are. […] How they work: RAMP transactions allow readers and writers to proceed concurrently. Operations race, but readers autonomously detect the races and repair any non-atomic reads. The write protocol ensures readers never stall waiting for writes to arrive. Why they scale: Clients can’t cause other clients to stall (via synchronization independence) and clients only have to contact the servers responsible for items in their transactions (via partition independence). As a consequence, there’s no mutual exclusion or synchronous coordination across servers. The end result: RAMP transactions outperform existing approaches across a variety of workloads, and, for a workload of 95% reads, RAMP transactions scale to over 7 million ops/second on 100 servers at less than 5% overhead.
(tags: scale synchronization databases distcomp distributed ramp transactions scalability peter-bailis protocols sharding concurrency atomic partitions)
wow, WFMU’s “Beware of the Blog” did a really good job of assembling these classic 1960s Cambodian psych mp3s, featuring Sinn Sisamouth and Ros Sereysothea among others. I still love the start of Ma Pi Naok….
(tags: mp3 download music cambodia psychedelia wfmu 1960s sinn-sisamouth ros-sereysothea)