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"OK Log is a distributed and coördination-free log management system for big ol' clusters. I built it from first principles, to teach myself the gory details of shuffling logs around. This is the story of the prototype."

""Fluentd" is a OSS lightweight and flexible log collector. Fluentd receives logs as JSON streams, buffers them, and sends them to other systems like S3, MongoDB, Hadoop, or other Fluentds."

Excelente discusión sobre librerías de logging, niveles de logging, qué tiene sentido y qué no.

"Sentry is a realtime, platform-agnostic error logging and aggregation platform"

The Eventsourced library adds scalable actor state persistence and at-least-once message delivery guarantees to Akka. With Eventsourced, stateful actors: - Persist received messages by appending them to a log (journal) - Project received messages to derive current state - Usually hold current state in memory (memory image) - Recover current (or past) state by replaying received messages (during normal application start or after crashes) - Never persist current state directly (except optional state snapshots for recovery time optimization)

Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. Dropwizard has out-of-the-box support for sophisticated configuration, application metrics, logging, operational tools, and much more, allowing you and your team to ship a production-quality HTTP+JSON web service in the shortest time possible.

"Datomic is a distributed database designed to enable scalable, flexible and intelligent applications, running on next-generation cloud architectures. It does this by: Bringing declarative data manipulation into the application, and the data with it Getting time, process and perception right Process (writes) require coordination Perception (reads) require none The past doesn't change Leveraging immutability, and a sound model of state Datomic has: ACID Transactions Joins A sound data model A logical query language - Datalog Thus, Datomic avoids the compromises and losses of many NoSQL solutions. In addition, it offers flexibility and power over the traditional model in supporting: Hierarchy Multi-valued attributes Minimal schema Reliable operation on unreliable, ephemeral cloud instances Time Datomic avoids manual caching and replication, complex configuration, sharding (automatic or manual), logging, locking, latching and disk management of traditional servers."

Ostrich is a library for servers that makes it easy to:  * load & reload per-environment configuration  * collect runtime statistics (counters, gauges, metrics, and labels)  * report those statistics through a simple web interface (optionally with graphs) or into log files  * interact with the server over HTTP to check build versions or shut it down

bastante bien. opiniones sin muchas vueltas

"We have identified common services used by cloud applications and have created generic APIs to work across cloud providers. Today, Go Cloud is launching with blob storage, MySQL database access, runtime configuration, and an HTTP server configured with request logging, tracing, and health checking. Go Cloud offers support for Google Cloud Platform (GCP) and Amazon Web Services (AWS). We plan to work with cloud industry partners and the Go community to add support for additional cloud providers very soon. "

"The sysout-over-slf4j module allows a user to redirect all calls to System.out and System.err to an SLF4J defined logger with the name of the fully qualified class in which the System.out.println (or similar) call was made, at configurable levels. "

Para cosas que no necesitan de sincronicidad, como un agregador de eventos de logging o un registrador de estadísticas de ambiente de ejecución, esta librería cliente de HBase parece mucho mucho mejor que el cliente propio.

big-data graph graph-processing architecture development programming