A practical look at Linux page cache behaviour on 1–2 GB VPS instances: how dirty pages, reclaim pressure, and drop_caches really work, and what to measure before adding RAM.
Read MoreDiagnosing CPU Steal Time on a VPS: Finding Noisy-Neighbor Contention
Your VPS shows 40% CPU utilization, no swap pressure, and plenty of free RAM — yet response times spike at the same time every evening. When the capacity numbers say…
Read MoreTuning PostgreSQL for a Small VPS: shared_buffers, WAL, and max_connections
PostgreSQL ships with configuration defaults tuned for a developer laptop, not a 2 GB VPS. On a small instance the three settings that cause the most pain are shared_buffers, wal_buffers/checkpoint…
Read MoreRedis Object Caching for WordPress on a VPS: Install, Tune, and Measure the Speedup
Page caching hides the problem; object caching fixes it. On a 2 vCPU / 2 GB instance, moving WordPress persistent object cache from MySQL to Redis cut median database query…
Read MoreRedis Eviction on a Small VPS: maxmemory-policy, Approximated LRU, and the Buffers That Steal Your Budget
Most Redis tutorials stop at maxmemory. The interesting part begins after it: which key gets evicted, why sample-based approximation sometimes deletes the object you just wrote, and how Redis 7’s…
Read MoreVPS Storage I/O Tuning: Optimizing Filesystem Mount Options and I/O Schedulers for Database Workloads
Storage I/O is the most common bottleneck for database workloads on a VPS. CPU and RAM are abundant on modern virtual servers, but the virtualized storage layer often introduces latency…
Read MoreNginx worker_processes and worker_connections: Sizing Them for a High-Concurrency VPS
The two lines that decide how much concurrency an Nginx instance can physically accept are worker_processes and worker_connections. Everything else in an Nginx config — caching, compression, buffers — only…
Read Moretuned-adm on a VPS: Matching Kernel Profiles to Web, Database and Latency-Sensitive Workloads
Tiny 512 MB VPS: latency-performance plus vm.swappiness=10 and a small swap file — not zero swap. Never leave the daemon on balanced if you chose tuned for performance; that is the…
Read MoreReducing VPS Latency: Measuring and Improving TTFB with CDN, Edge Caching, and Server Tuning
Latency directly impacts user experience and revenue. According to a 2023 Google study, a 100 ms increase in TTFB (Time to First Byte) reduces conversion rates by 7%. For a…
Read MoreInterpreting VPS Benchmarks: Reading Latency Percentiles, CPU Steal and iowait
Learn to read VPS benchmark output correctly: normalize load average against vCPU count, distinguish CPU steal from real load, and interpret iowait using PSI and iostat before you decide to resize.
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