data federation vs data virtualization

ExploitationOdiImplement loose coupling between business flow and data flow in SOA EnterpriseIn the process of implementing SOA, we will inevitably encounter integration at the Business Process Level and data integration. Most of the time, we think that the Enterprise Service Bus (ESB) can be competent for all the work, it supports both Business Process Orchestration and

(similar to checkpoint ). Replication: MemSQL currently supports master-slave replication. It supports local replication protocol to transfer transaction logs to slave. Distributed architecture: working based on the concepts of aggregators and leaf nodes, a leaf node is a MemSQL database. The aggregators are responsible for decomposing and querying the relevant leaf nodes, and aggregating the results back to the client. GemFireThe technical principles of the memory-based distributed cluster sys

are read operations, memcached can significantly reduce the database load. 2) If the load ratio of the database server is low but the CPU usage is very high, the calculated results (computed objects) and the rendered webpage template (enderred templates) can be cached ). 3) Use memcached to cacheSession dataTemporary data to reduce write operations on their databases. 4) cache some small files that are frequently asked. 5) cache the results of Web 's

are read operations, memcached can significantly reduce the database load. 2) If the load ratio of the database server is low but the CPU usage is very high, the calculated results (computed objects) and the rendered webpage template (enderred templates) can be cached ). 3) Use memcached to cacheSession dataTemporary data to reduce write operations on their databases. 4) cache some small files that are frequently asked. 5) cache the results of Web 's

Communication Professional Committee of China Engineering Construction Standards Association has conducted two surveys on the construction of China's data center in 2010 ~2011 years. From the statistical results, the data center room area showed a significant growth momentum, the Chinese data center market investment ratio is also increasing. Based on the analys

(computed objects) and the rendered page template (enderred templates) can be cached. 3 The use of memcached can cache session data , temporary data to reduce their database write operations. 4 cache Some files that are small but frequently accessed. 5 Caching Web ' services ' (non-IBM-promoted Web services, translator's note) or RSS feeds results ... 3, does not apply the memcached business scene. 1 The

Memcache The problem of storing big data HuangguisuMemcached stores a single item maximum data is within 1MB, assuming that the data exceeds 1M, access set and get are both return false and cause performance problems.We previously cached the leaderboard data because the leaderboard accounted for 30% of all our SQL SEL

Cannot be overly obsessed with virtualized data centers At present, the industry's interest in data center and virtual environment automation is growing-automation frees administrators from daily hard work, IT professionals are allowed to focus on more strategic projects that can bring long-term practical benefits to the business. However, virtualization automat

HSM system and then copied to the HSM media. After the file is correctly copied, a logo file with the same name as the original file is created, but it only occupies a much smaller disk space than the original file. Later, when the user accesses this flag file, the HSM system can restore the original file from the correct media. Hierarchical Storage can be implemented in different ways. HSM classifies dynamic migration/migration data based on two or

Memsql Principle: combines unlocked data structures with real-time compilers to handle large workloads, lock-free hashtable and lock-free skiplists (a hierarchical linked list structure) are implemented in the memory to quickly access data randomly. Persistence: Although memsql stores data in the memory, it can persist data