The list of things I read or watched this month The right way to define a C function with no arguments - https://www.youtube.com/watch?v=VsRs0H4hXEE TREE-STRUCTURED CONCURRENCY — 2023-07-01 - https://blog.yoshuawuyts.com/tree-structured-concurrency/ Myths Programmers Believe about CPU Caches - https://software.rajivprab.com/2018/04/29/myths-programmers-believe-about-cpu-caches/ Eventual vs Strong Consistency in Distributed Databases - https://hackernoon.com/eventual-vs-strong-consistency-in-distributed-databases-282fdad37cf7 Accounting For Developers, Part I - https://www.moderntreasury.com/journal/accounting-for-developers-part-i Accounting For Developers, Part II - https://www.moderntreasury.com/journal/accounting-for-developers-part-ii Accounting for Developers Part III: Building a Lending Marketplace - https://www....

Sending logs and traces from a Rust app to Grafana cloud Run the Grafana agent Put the Grafana agent config in grafana-agent/agent/agent.yaml. server: log_level: debug logs: configs: - name: default positions: filename: /tmp/positions.yaml scrape_configs: - job_name: varlogs static_configs: - targets: [localhost] labels: job: varlogs app: rust-grafana-metrics-logs-traces __path__: /var/log/app/*log clients: - url: <grafana-cloud-loki-url> traces: configs: - name: default receivers: otlp: protocols: grpc: remote_write: - endpoint: tempo-us-central1.grafana.net:443 insecure: false # only add this if TLS is not required basic_auth: username: <grafana-cloud-tempo-username> password: <grafana-cloud-tempo-password> batch: timeout: 5s send_batch_size: 100 Run the Grafana agent docker run \ -v $PWD/grafana-agent/data:/etc/agent/data \ -v $PWD/grafana-agent/agent....

It feels like most people are not used to thinking about how things can fail, programming as if things always work as expected is the default modus operandi of most engineers i have talked to. Some examples that come to mind: http requests without handling responses that don’t have status 200, no timeouts, no retries, publishing a message to kafka and them updating a database, having a web client orchestrate a transaction across several systems without thinking: what if the user closes the browser tab?...

A deadlock happens when there’s at least one resource that can be only acquired by one process at a time and there’s a process P1 that is waiting to acquire a resource currently held by a process P2 and P2 is waiting to acquire a resource currently held by P1. The word process does not mean we are talking about just OS processes. There are two processes: Process A wants to acquire a lock on resource 1 and then a lock on resource 2....

Anomalies An anomaly or read phenomena can happen when a transaction reads data that may have been modified by another concurrent transaction. Dirty read A dirty read happens when a transaction T1 reads data that has been modified by a concurrent transaction T2 that has not has been committed or rolled back yet. T1 ends up working with stale data if T2 does not commit. T2 starts executing and sets x to a new value, T1 starts executing and reads x, the value of x is the value just set by T2, T2 rolls back, the value of x is not persisted to the database but T1 will move forward with the stale value of x that was written before T2 rolled back....